Update README.md

jeffhtli · jeffhtli · commit ea33304ccb57 · 2015-10-21T09:10:59.000+08:00
diff --git a/README.md b/README.md
@@ -53,3 +53,10 @@ RxJava resources
  
  Android&#20013;&#20351;&#29992;Rx&#30340;&#19968;&#31181;&#26550;&#26500;
  [rx-android-architecture](https://github.com/tehmou/rx-android-architecture)
+ 
+ RxJava&#20363;&#23376;
+ [learnrxjava](https://github.com/jhusain/learnrxjava)
+ 
+## stackoverflow
+ 
+ [When should one use RxJava Observable and when simple Callback on Android?](http://stackoverflow.com/questions/21890338/when-should-one-use-rxjava-observable-and-when-simple-callback-on-android)
