clean code
Merge pull request #4 from ahcorde/develop

clean code
Add permissions for Pixy USB interface
Merge pull request #5 from ahcorde/master

Add permissions for Pixy USB interface
Image streaming from BBB (test with Logitech, Inc. QuickCam Pro 9000)
Merge pull request #6 from ahcorde/develop

Image streaming from BBB (test with Logitech, Inc. QuickCam Pro 9000)