Added coding framework for X11
Implemented the X11-grabber (based on v4l code).
Fixed correct addres configuration
Fixed missing include
Added performance test for x11 grabbing
Added qt screenshot test
Merge branch 'master' into add_x11
Merge branch 'master' into add_x11
Refactor V4L2 and X11 grabbers to share more code
add framerate parameter to X11 grabber application
Fix output size of X11 image after deciamtion
fix slot name
Extract ImageResampler from X11Grabber
Use ImageResampler in V4L2 grabber
Fix typo
Merge branch 'add_x11' of https://github.com/tvdzwan/hyperion into add_x11
Improve readability of usage message
Merge branch 'add_x11'