Initial crop activity
Crop box moves around
Basic cropping working
Crop the ad and send to next activity
merged conflicts
Conform to new package scheme
Added documentation
merged conflicts
Added control buttons to layout
Cleaned up comments, added javadoc
Merge pull request #90 from elihart/funnel

Fixed the comments and javadoc, added buttons
Merge pull request #86 from benrudolph/cropping-activity

Adds crop activity (#85)
Resolved conflicts