Let JsonReader to run instead of Rss

	modified:   AndroidManifest.xml
	modified:   src/main/java/org/sdhanbit/mobile/android/activities/MainActivity.java
	modified:   src/main/java/org/sdhanbit/mobile/android/json/FeedAPI.java
	modified:   src/main/java/org/sdhanbit/mobile/android/schedulers/JsonReaderScheduler.java