+ /* the content of update.json as below
+ peng@[~/web/RtmpClient]>> cat update.json
+ {
+ "url":"http://downloads.suanzi.ai/RtmpClient/RtmpClient-v0.3.3-release.apk",
+ "versionCode":33,
+ "updateMessage":"1. Fix bug<br/>2. Update<br/>3. test"
+ }
+ */
+