Creating an App Widget

[nesquena]

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