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Description
Add a guide about creating home screen widgets:
- http://www.vogella.com/tutorials/AndroidWidgets/article.html
- https://www.youtube.com/watch?v=p_ZjPb_opVQ
- http://www.tutorialspoint.com/android/android_widgets.htm
- https://developer.android.com/guide/topics/appwidgets/index.html