activities/explicit - fix up the button and textview with better content/explains what they are
remove junk file
update commonsware tutorial doc
Initial commit of tutorial 7 - very simple 2 Activity app.
Initial checkin activities/Lifecycle - log mesgs in each lifecycle method onStop(), onPause(), etc.
add ignores to app for files that Android Studio does not
git-add - so we assume they are to be ignored
activities/Lifecycle - ignore files that Android Studio
does not git-add  - so we assume they can be ignored.
update commonsware tutorial doc