Created main_grid.xml attempting to create grid layout with buttons
Merge pull request #138 from dewguzzler/master

fixed problems
Added main button images
Fixed grid layout and removed textview.
Merge pull request #139 from dewguzzler/master

fixed class search to portrait
Added text below each icon
Merge remote-tracking branch 'upstream/master' into main-btn-images
Merge pull request #140 from rramsaro/main-btn-images

Added Icons