added deps for rpi building and how to update it on device:   README.markdown
	Finally got rid of HDD Recorder in LG Simplink menu. Now CD player is active and selected properly:   src/arch/rpi/rpi_cec.c
rpi: Improve CEC a bit

Add a Settings group to control CEC

User can now select if Showtime should ask TV to switch to its
input when Showtime is started (default disabled).

User can also select if Showtime should shutdown the UI when
it detects that the TV is off. (default disabled).