Ignore Mac OSX Finder files
Manage the "offset" input config option
Add input config to change yaw with shoulder buttons
Merge branch 'ps4-shoulder-buttons' of https://github.com/debona/crazyflie-clients-python into debona-ps4-shoulder-buttons

Conflicts:
	lib/cfclient/utils/config_manager.py
	lib/cfclient/utils/pysdl2reader.py