add types for callback in constructor (#90)
diff --git a/README.md b/README.md
index 48785a2..73d0f07 100644
--- a/README.md
+++ b/README.md
@@ -74,9 +74,9 @@
- __mediaSuccess__: (Optional) The callback that executes after a `Media` object has completed the current play, record, or stop action. _(Function)_
-- __mediaError__: (Optional) The callback that executes if an error occurs. _(Function)_
+- __mediaError__: (Optional) The callback that executes if an error occurs. It takes an integer error code. _(Function)_
-- __mediaStatus__: (Optional) The callback that executes to indicate status changes. _(Function)_
+- __mediaStatus__: (Optional) The callback that executes to indicate status changes. It takes a integer status code. _(Function)_
__NOTE__: `cdvfile` path is supported as `src` parameter:
```javascript
