Adding didCancelCamera delegate method.
Removing @optional from didCancelCamera and updating the demo app to dismiss the camera when didCancelCamera is called.
Updating TGCameraDelegate methods to cameraDidTakePhoto:, cameraDidCancel, and (optional) cameraWillTakePhoto. Also updating the example and README to reflect these changes.
Small adjustments in the pull request
:Merge branch 'adamtootle-master'