Added security notes/warning to readme.
Pertaining to concerns of #13
Draft of keyboard.enabled option.
Implements #19.
Note in log if keyboard input ignored. Tweak KeyboardInterface
Use xdg-open to edit config file.
http://portland.freedesktop.org/xdg-utils-1.0/xdg-open.html #17
Merge branch 'master' into pngicons