Updated .gitignore with the github recommended one for android

More info :
https://github.com/github/gitignore/blob/master/Android.gitignore
Merge remote-tracking branch 'origin/master' into EFY-login
.gitignore fix?
Merge remote-tracking branch 'origin/master' into EFY-login
Added my own debugActivity
Added my own debug Activity
Merge remote-tracking branch 'origin/EFY-login'