Watch out for import bug

This line was removed automatically by Android Studio from modules.xml when I opened this project on my machine.  
module fileurl="file://$PROJECT_DIR$/app/app.iml" filepath="$PROJECT_DIR$/app/app.iml" 

Cost me an hour.  Put it back in and it built.

This is a good project, needs a better readme though.  A how to use would be nice.
