Added functionality for take picture button. Can now access camera, take picture and save to SketchPlay directory in Pictures directory on SD card.
Added comments to MainMenuActivity
Added preview image to load_menu layout. Added functionality to import picture button. User can now select image either by taking picture or importing picture and picture will display in preview.
Changing camera picture format from jpeg to bmp.
Merge pull request #2 from kshah2451/keval

Added camera access and import picture functionality.