Navigate to activities available.
TODO : Display grid, Back button action.
Merge branch 'master' of https://github.com/NHKChris/5i-minesweeper

Conflicts:
	bin/AndroidManifest.xml
	bin/Winmine.apk
	bin/classes.dex
	bin/classes/esgi/project/winmine/GameMenuActivity.class
	bin/classes/esgi/project/winmine/Grid.class
	bin/classes/esgi/project/winmine/MainActivity.class
	bin/classes/esgi/project/winmine/R$dimen.class
	bin/classes/esgi/project/winmine/R$drawable.class
	bin/classes/esgi/project/winmine/R$id.class
	bin/classes/esgi/project/winmine/R$layout.class
	bin/classes/esgi/project/winmine/R$menu.class
	bin/classes/esgi/project/winmine/R$string.class
	bin/classes/esgi/project/winmine/R$style.class
	bin/resources.ap_
	gen/esgi/project/winmine/R.java