Pyparrot

Working to make drone vision faster. The interface has changed to open_video and close_video and no calls to start_video_buffering.

Updated DroneVision to work on windows (minor fix to paths)

Major update to allow for vision processing on both the Bebop and the Mambo using a common interface (DroneVision). Documentation has also been updated significantly with much of the documentation moving to the wiki.

Added a user callback function to the mambo vision and demonstrated how to use it in the demoMamboVision example

Bebop now has vision streaming (must be accessed by an outside client such as VLC).

Mambo now has orientation estimation using the quaternions plus a few fixes from live demos where we noticed user errors (such as crashing when someone sends invalid data to flying commands instead of handling it gracefully).

Updated the sensor parsing to handle tuples of sensors for Bebop and Mambo.