add `echarts-extension-amap` to extension download page.
diff --git a/_jade/en/download-extension.jade b/_jade/en/download-extension.jade
index 6314d7f..1b901be 100644
--- a/_jade/en/download-extension.jade
+++ b/_jade/en/download-extension.jade
@@ -15,7 +15,7 @@
             .extension-info
                 a.extension-name(href="#{website}") #{ext.name}
                 .extension-author
-                    span Contributors:
+                    span Contributors: 
                     each author in ext.authors
                         a.extension-author-name(href="#{author.website}") #{author.name}
                 .extension-desc #{ext.descEN}
@@ -72,7 +72,7 @@
                 h3 Submit your ECharts extension
                 p We will get in touch with you as soon as possible, and the extensions you make will be available to ECharts users on this page.
                 p Thank you again for your support and contribution to ECharts!
-                a.btn.btn-main.btn-thirdary(href='mailto:dev@echarts.apache.com')
+                a.btn.btn-main.btn-thirdary(href='mailto:dev@echarts.apache.org')
                     img(src='#{cdnPayRoot}/#{ecWWWLang}/images/btn-email.png?_v_=#{cdnPayVersion}')
                     span Send Email
 
diff --git a/config/common.js b/config/common.js
index 53d4d78c..e5bbefb 100644
--- a/config/common.js
+++ b/config/common.js
@@ -384,6 +384,16 @@
             }],
             desc: 'Mapbox 地图和 ECharts 的结合。',
             descEN: 'A combination of Mapbox maps and ECharts.'
+        }, {
+            image: 'amap.jpg',
+            name: '高德地图',
+            website: 'https://github.com/plainheart/echarts-extension-amap',
+            authors: [{
+                name: 'plainheart',
+                website: 'https://github.com/plainheart'
+            }],
+            desc: '高德地图扩展,可以在高德地图上展现点图,线图,热力图等。',
+            descEN: 'AMap extension for ECharts which is used to display visualizations such as Scatter, Lines, Heatmap.'
         }],
         functional: [{
             image: 'modularity.jpg',
diff --git a/images/extensions/amap.jpg b/images/extensions/amap.jpg
new file mode 100644
index 0000000..2eeb334
--- /dev/null
+++ b/images/extensions/amap.jpg
Binary files differ