Specified Compiler compliance
Updated to more restrictive Android gitignore

Added all of the standard Android gitignore except Eclipse and Intellij
project configuration files
Fixed github link in README
Merge pull request #3 from ekux44/master

Fixed compiler compliance, updated gitignore, fixed README
Merge branch 'master' of ttps://github.com/NXT/LEGO-MINDSTORMS-MINDdroid
into cleanup resolving conflicts with previous changes in .gitignore
and adding .org.eclipse.jdt.core.prefs