* [Doc] Update doc for animation. (#268)

diff --git a/source/cn/references/modules/animation.md b/source/cn/references/modules/animation.md
index 368ed28..b7943b2 100644
--- a/source/cn/references/modules/animation.md
+++ b/source/cn/references/modules/animation.md
@@ -16,68 +16,68 @@
 
 举个例子,如果有一个 `<image>` 组件,通过动画你可以对其进行移动、旋转、拉伸或收缩等动作。
 
-> **注意:** 现在Weex只支持在JavaScript中使用动画, CSS 动画是和JavaScript 动画是不一样的。我们即将支持在CSS中使用动画。
+> **Note:** 如果需要使用CSS动画,参考 [transition](../../wiki/common-styles.html#property)。
+
 
 ## 基本用法
 
-### animation.transition(el, options, callback)
+### animation.transition(erf, options, callback)
 
 ```javascript
 animation.transition(ref1, {
-          styles: {
-            backgroundColor: '#FF0000',
-            transform: 'translate(250px, 100px)',
-          },
-          duration: 800, //ms
-          timingFunction: 'ease',
-          needLayout:false,
-          delay: 0 //ms
-        }, function () {
-          modal.toast({ message: 'animation finished.' })
-        })
+    styles: {
+        backgroundColor: '#FF0000',
+        transform: 'translate(250px, 100px)',
+    },
+        duration: 800, //ms
+        timingFunction: 'ease',
+        needLayout:false,
+        delay: 0 //ms
+    }, function () {
+        modal.toast({ message: 'animation finished.' })
+    })
 ```
 
 ## 属性
 
-### `el `:
+### `ref `:
 
 将要执行动画的元素。
 
-例如指定动画的元素 ``el`` 属性为 ``test`` , 可以通过调用 `this.refs.test` 来获取元素的引用。
+例如指定动画的元素 ``ref`` 属性为 ``test`` , 可以通过调用 `this.$refs.test` 来获取元素的引用。
 
 ### `options`:
 
 - `styles`(object):设置不同样式过渡效果的键值对,下表列出了所有合法的参数:
 
-| 参数名             | 描述                                       | 值类型             | 默认值             |
-| --------------- | ---------------------------------------- | --------------- | --------------- |
-| width           | 动画执行后应用到组件上的宽度值                          | length          | 无               |
-| height          | 动画执行后应用到组件上的高度值                          | length          | 无               |
-| backgroundColor | 动画执行后应用到组件上的背景颜色                         | string          | none            |
-| opacity         | 动画执行后应用到组件上的不透明度值                        | 介于 0 到 1 间的数值   | `1`             |
-| transformOrigin | 定义变化过程的中心点. 参数 `x-aris` 可能的值为 `left`、`center`、`right`、长度值或百分比值, 参数 `y-axis` 可能的值为 `top`、`center`、`bottom`、长度值或百分比值 | `x-axis y-axis` | `center center` |
-| transform       | 定义应用在元素上的变换类型,支持下表列出的属性                  | object          | 无               |
+  | 参数名             | 描述                                   | 值类型             | 默认值             |
+  | --------------- | ---------------------------------------- | ---------- | --------------- |
+  | width           | 动画执行后应用到组件上的宽度值。设置为 `needLayout` `true` 如果你需要影响布局。               | length     | computed width               |
+  | height          | 动画执行后应用到组件上的高度值。设置为 `needLayout` `true` 如果你需要影响布局。       | length     | computed height              |
+  | backgroundColor | 动画执行后应用到组件上的背景颜色                         | string          | computed backgroundColor            |
+  | opacity         | 动画执行后应用到组件上的不透明度值                        | computed opacity   | `1`             |
+  | transformOrigin | 定义变化过程的中心点. 参数 `x-aris` 可能的值为 `left`、`center`、`right`、长度值或百分比值, 参数 `y-axis` 可能的值为 `top`、`center`、`bottom`、长度值或百分比值 | `x-axis y-axis` | `center center` |
+  | transform       | 变换类型,可能包含rotate`, `translate`, `scale`及其他属性。| object| 无 |
 
-`transform`同时也有很多对应的属性,可以参见下表:
+  * `transform`支持的字段如下:
 
-(注:如果想同时执行多个动画只需要用空格隔开,比如)
-```
- transform: 'translate(250px, 100px) scale(1.5)'
-```
+    | 名称                                       | 描述                              | 值类型     | 默认值  |
+    | ---------------------------------------- | ------------------------------- | ------- | ---- |
+    | `translate`/`translateX`/`translateY`    | 指定元素要移动到的位置                     | 像素值或百分比 | 0    |
+    | `rotate`                                 | 指定元素将被旋转的角度,单位是度                | number  | 0    |
+    | `scale`/`scaleX`/`scaleY`                | 按比例放大或缩小元素                      | number  | 1    |
+    | `rotate`/`rotateX` <span class="api-version">v0.14+</span> /`rotateY` <span class="api-version">v0.14+</span> | 指定元素将被旋转的角度,单位是度                | number  | 无    |
+    | `perspective` <span class="api-version">v0.16+</span> | 观察者距离z=0平面的距离,在Android 4.1及以上有效 | number  | 正无穷  |
 
+    > (注:如果想同时执行多个动画只需要用空格隔开,比如)
+      ```
+     transform: 'translate(250px, 100px) scale(1.5)'
+      ```
 
-| 名称                                       | 描述                              | 值类型     | 默认值  |
-| ---------------------------------------- | ------------------------------- | ------- | ---- |
-| `translate`/`translateX`/`translateY`    | 指定元素要移动到的位置                     | 像素值或百分比 | 无    |
-| `rotate`                                 | 指定元素将被旋转的角度,单位是度                | number  | 无    |
-| `scale`/`scaleX`/`scaleY`                | 按比例放大或缩小元素                      | number  | 无    |
-| `rotate`/`rotateX` <span class="api-version">v0.14+</span> /`rotateY` <span class="api-version">v0.14+</span> | 指定元素将被旋转的角度,单位是度                | number  | 无    |
-| `perspective` <span class="api-version">v0.16+</span> | 观察者距离z=0平面的距离,在Android 4.1及以上有效 | number  | 正无穷  |
-
-* `duration  `(number):指定动画的持续时间 (单位是毫秒),默认值是 `0`,表示没有动画效果。
+* `duration  `(number):指定动画的持续时间 (单位是毫秒),默认值是 `0`,表示瞬间达到动画结束状态。
 * `delay ` (number):指定请求动画操作到执行动画之间的时间间隔 (单位是毫秒),默认值是 `0`,表示没有延迟,在请求后立即执行动画。
-* `needLayout` (boolean):节点动画执行时是否产生布局动画即LayoutAnimation,默认值是false。
-* `timingFunction ` (string):描述动画执行的速度曲线,用于使动画变化更为平滑。默认值是 `linear`,表示动画从开始到结束都拥有同样的速度。下表列出了所有合法的属性:
+* `needLayout` (boolean):动画执行是否影响布局,默认值是false。
+* `timingFunction ` (string):描述动画执行的速度曲线,用于描述动画已消耗时间和动画完成进度间的映射关系。默认值是 `linear`,表示动画从开始到结束都拥有同样的速度。下表列出了所有合法的属性:
 
 | 属性名                            | 描述                                       |
 | ------------------------------ | ---------------------------------------- |
@@ -91,7 +91,9 @@
 ### `callback ` 
 `callback`是动画执行完毕之后的回调函数。在iOS平台上,你可以获取动画执行是否成功的信息。
 
-  > **注意: 在0.16.0+版本后,iOS上可以获取animation是否执行成功的信息,callback中的`result`参数会有两种,分别是是`Success`与`Fail`,Android目前暂不支持。**
+  > **注意: 在0.16.0+版本后,iOS上可以获取 animation 是否执行成功的信息,callback中的`result`参数会有两种,分别是是`Success`与`Fail`。**
+  
+  > **注意: Android 的callback 函数不支持result参数**
 
 ## 示例
 [animation demo](http://dotwe.org/vue/a6c03edd4c5bbd6caea29cac688269a0)
diff --git a/source/references/modules/animation.md b/source/references/modules/animation.md
index c0a69f5..e7a96c1 100644
--- a/source/references/modules/animation.md
+++ b/source/references/modules/animation.md
@@ -15,76 +15,78 @@
 
 For example, if you have a `image` component, you can move, rotate, grow, or shrink it by animation.
 
-> **Note:** Now,Weex only support use animation in Javascript. CSS Animation is different from this,we will soon support CSS Animation.
+> **Note:** Ref [transition](../../wiki/common-styles.html#property) if you want to use CSS animation.
 
 ## Basic Usage
 
-### animation.transition(el, options, callback)
+### animation.transition(ref, options, callback)
 
 ```javascript
-animation.transition(ref1, {
-          styles: {
-            backgroundColor: '#FF0000',
-            transform: 'translate(250px, 100px)',
-          },
-          duration: 800, //ms
-          timingFunction: 'ease',
-          needLayout:false,
-          delay: 0 //ms
-        }, function () {
-          modal.toast({ message: 'animation finished.' })
-        })
+animation.transition(test, {
+    styles: {
+        backgroundColor: '#FF0000',
+        transform: 'translate(250px, 100px)',
+    },
+        duration: 800, //ms
+        timingFunction: 'ease',
+        needLayout:false,
+        delay: 0 //ms
+    }, function () {
+        modal.toast({ message: 'animation finished.' })
+    })
 ```
 
 ## Attributes
 
-### ``el``
+### ``ref``
 
-An element that will be animated.
+The element that will be animated.
 
-For example , specify the `el` attribute for the element you want to animated as `element`, so you can get this element by calling `this.refs.element`.
+For example, if the value of `ref` for an element is `test`, you can start an animation with `this.$refs.test`.
 
 ### ``options``
 
-- `styles` (object): Specify the names and values of styles to which a transition effect should be applied. The allowed attributes are listed in the following table:        
+- `styles` (object): Specify the names and values of styles to which a transition effect should be applied. The supported styles are listed in the following table:        
 
-| name            | description                              | value type            | default value   |
-| :-------------- | :--------------------------------------- | :-------------------- | :-------------- |
-| width           | The width applied to the component after the animation finished. | length                | none            |
-| height          | The height applied to the component after the animation finished. | length                | none            |
-| backgroundColor | The background color applied to the component after the animation finished. | string                | none            |
-| opacity         | The opacity applied to the component after the animation finished. | number between 0 to 1 | `1`             |
-| transformOrigin | The povit of transition. The possible values for `x-aris` are `left`/`center`/`right`/length or percent, and possible values of `y-axis` are `top`/`center`/`bottom`/ length or percent | `x-axis y-axis`       | `center center` |
-| **transform**   | Transform function to be applied to the element. The properties in the following table are supported | object                | none            |
+  | name            | description                              | value type            | default value   |
+  | :-------------- | :--------------------------------------- | :-------------------- | :-------------- |
+  | width           | The width applied to the component after the animation finished. Set `needLayout` to true if you want the change to be persistence. | length                | computed width            |
+  | height          | The height applied to the component after the animation finished. Set `needLayout` to true if you want the change to be persistence. | length                | computed height            |
+  | backgroundColor | The background color applied to the component after the animation finished. | string                | computed backgroundColor            |
+  | opacity         | The opacity applied to the component after the animation finished. | number between 0 to 1 | computed opacity             |
+  | transformOrigin | The pivot of transition. The possible values for `x-aris` are `left`/`center`/`right`/length or percent, and possible values of `y-axis` are `top`/`center`/`bottom`/ length or percent | `x-axis y-axis`       | `center center` |
+  | **transform**   | Transform object, which may include `rotate`, `translate`, `scale` and etc. | object                | none            |
 
-``transform`` also have many parameters,please see the table below.
+  * The following table illustrate the detail of ``transform``.
 
-| name                                     | description                              | value type       | default value     |
-| :--------------------------------------- | :--------------------------------------- | :--------------- | :---------------- |
-| translate/translateX/translateY          | Specifies the location of which the element will be translated to. | pixel or percent | none              |
-| rotate/rotateX <span class="api-version">v0.14+</span> /rotateY <span class="api-version">v0.14+</span> | Specifies the angle of which the element will be rotated, the unit is degree. | number           | none              |
-| perspective <span class="api-version">v0.16+</span> | The distance between the z=0 plane and the user in order to give to the 3D-positioned element some perspective. Supported for Android 4.1 and above. | number           | positive infinity |
-| scale/scaleX/scaleY                      | Stretch or shrink the element.           | number           | none              |
+    | name                                     | description                              | value type       | default value     |
+    | :--------------------------------------- | :--------------------------------------- | :--------------- | :---------------- |
+    | translate/translateX/translateY          | Specifies the location which the element will be translated to. | pixel or percent | 0       |
+    | rotate/rotateX <span class="api-version">v0.14+</span> /rotateY <span class="api-version">v0.14+</span> | Specifies the angle of which the element will be rotated, the unit is degree. | number           | 0              |
+    | perspective <span class="api-version">v0.16+</span> | 3D perspective. The distance between the z=0 plane and the user. Supported for **Android 4.1** and above. | number           | positive infinity |
+    | scale/scaleX/scaleY                      | Stretch or shrink the element.           | number           | 1             |
 
-- `duration` (number): Specifies the number of milliseconds of animation execution, the default value is `0`, means that no animation will occur.    
-- `delay` (number): Specifies the amount of milliseconds to wait between a change being requested to a property that is to be transitioned and the start of the transition effect. The default value is `0`.   
-- `needLayout`(boolean):Whether or not the layout animation occurs when animation is executed,default value is `false`
-- `timingFunction` (string): Used to describe how the intermediate values of the styles being affected by a transition effect are calculated, default value is `linear`, the allowed attributes are listed in the following table:    
+- `duration` (number): Specify the duration of animation execution, the default value is `0`, meaning that the component get the desired property immediately.    
+- `delay` (number): Specify the waiting time before the animation starts. The default value is `0`.   
+- `needLayout`(boolean):Whether the change to layout(width/height/etc..) is persistence and takes affect after the animation. Default value is `false`
+- `timingFunction` (string): Used to describe how the intermediate values are calculated for the CSS properties being affected by the animation effect. default value is `linear`, the supported values are listed in the following table:    
 
-| name                           | description                              |
-| :----------------------------- | :--------------------------------------- |
-| `linear`                       | Specifies a transition effect with the same speed from start to end |
-| `ease`                         | Specifies a transition effect with a slower and slower speed |
-| `ease-in`                      | Specifies a transition effect with a slow start |
-| `ease-out`                     | Specifies a transition effect with a slow end |
-| `ease-in-out`                  | Specifies a transition effect with a slow start and end |
-| `cubic-bezier(x1, y1, x2, y2)` | Define your own values in the cubic-bezier function. Possible values are parameter values from 0 to 1. More information about cubic-bezier please visit [cubic-bezier](http://cubic-bezier.com/) and [Bézier curve](https://en.wikipedia.org/wiki/B%C3%A9zier_curve). |
+  | name                           | description                              |
+  | :----------------------------- | :--------------------------------------- |
+  | `linear`                       | Specifies a transition effect with the same speed from start to end |
+  | `ease`                         | Specifies a transition effect with a slower and slower speed |
+  | `ease-in`                      | Specifies a transition effect with a slow start |
+  | `ease-out`                     | Specifies a transition effect with a slow end |
+  | `ease-in-out`                  | Specifies a transition effect with a slow start and end |
+  | `cubic-bezier(x1, y1, x2, y2)` | Define your own values in the cubic-bezier function. Possible values are parameter values from 0 to 1. More information about cubic-bezier please visit [cubic-bezier](http://cubic-bezier.com/) and [Bézier curve](https://en.wikipedia.org/wiki/B%C3%A9zier_curve). |
 
 ### ``callback``
 
-Callback which is a function called after the completion of animation. In iOS platform, you can use function to get animation processing's information.
+Callback is a function called after the completion of animation. In iOS platform, you can use function to get information of animation execution.
 
 >**Note: after WeexSDK0.16.0, in iOS platform can get animation's message about completion, there are two types of parameters with `result`, is `Success`and `Fail`, Android can not support until now.**
 
+> **Note: Android doesn't support the result parameter.**
+
 ### Example
 - [animation demo](http://dotwe.org/vue/2d1b61bef061448c1a5a13eac9624410)