Merge pull request #90 from CaiJingLong/fix-refresh-for-asset-list

Update example , readme, version and changelog.

CHANGELOG.md

 # CHANGELOG
 
+## 0.4.5+1
+
+Fix:
+
+- `photoPathList` of `PhotoPicker.pickAsset`.
+
 ## 0.4.5
 
 Rollback `photo_manager` to `0.4.5`.

README.md

 import 'package:photo_manager/photo_manager.dart';
 ```
 
-## use
+## Usage
+
+### Simple use
+
+```dart
+void pickAssets() async {
+    List<AssetEntity> assetList = await PhotoPicker.pickAsset(context: context);
+    /// Use assetList to do something.
+}
+```
+
+### More option
+
+The context is required, other params is optional.
 
 ```dart
 void pickAsset() async {

example/lib/main.dart

   }
 
   void _pickAsset(PickType type, {List<AssetPathEntity> pathList}) async {
+    /// context is required, other params is optional.
+    /// context is required, other params is optional.
+    /// context is required, other params is optional.
+
     List<AssetEntity> imgList = await PhotoPicker.pickAsset(
       // BuildContext required
       context: context,

pubspec.yaml

 name: photo
 description: image picker, multi picker support video/icloud asset, use flutter as ui, if you want to build custom ui, you just use photo_manager.
-version: 0.4.5
+version: 0.4.5+1
 author: caijinglong<cjl_spy@163.com>
 homepage: https://github.com/CaiJingLong/flutter_photo
 
 environment:
-  sdk: '>=2.0.0-dev.68.0 <3.0.0'
+  sdk: ">=2.0.0-dev.68.0 <3.0.0"
 
 dependencies:
   flutter: