Add pirate user to the "video" group

[marcosnils]

If camera is enabled, it won't work by default as users need to be added to this group. This will also reduce friction from new adopters trying to use the camera

[StefanScherer]

@marcosnils Thanks, that makes sense. Could you append what is needed in config.txt to enable the camera?

[marcosnils]

These are the usual parameters

start_x=1
disable_camera_led=1
gpu_mem=128

http://elinux.org/RPiconfig#Camera