Initial crop activity
Crop box moves around
Basic gamma correction working.

Three sliders for RGB. Inefficient and lags a lot...
Merge branch 'master' of https://github.com/maplesyrup/maple-android into funnel
Changed gamma correction to one slider for all three channels. Added text label.
Basic cropping working
Added brightness adjustment
Crop the ad and send to next activity
merged conflicts
Conform to new package scheme
Added documentation
Merge pull request #81 from elihart/funnel

Color manipulation though gamma and brightness sliders
merged conflicts
Added functionality to AdCreationManager to track current stage in funnel and offer methods to go forward or back in the funnel
Added control buttons to layout
Pick from image from gallery or take a photo
Documentation
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)