Fixed various problems in code
Update .gitignore
Commented out and cleaned up log statements
Update README
Further removal of logging

The logging classes were still included which cause compile warnings.
I commented them out.
Set up proguard

Enable proguard and disable obfuscation
Re-enable obfuscation

Obfuscation appears to reduce the apk file size, which I think is important
for such a small and limited app.  Hopefully this does not make debugging
too difficult later on...
Optimize feature graphic

This was missed the first time around
Add settings test

I could not get this test to work fully.
In particular, the check to see if the activities are enabled
is not working.  It also needs a lot of cleanup.
In the interest of time I decided to abandon this test, but will keep
it in a separate branch in case I want to bring it back later.
Fix problems due to refactoring
Failed attempt at getting the preference widget to simulate clicks against.