add a link to the wiki from the readme
updated version for rpi-firmware and rpi-userland
added gpsp package
added ncurses and alsa tools to the config
add gpsp to the emulation station systems config
remove the default emulation station input

	- this automatically prompts for config on start
move the custom boot config to the default settings
add some default rom dirs to the fsoverlay
add a script from another rpi buildroot to prepare SD cards

	- handles partitioning and formatting
	- copies boot and root filesystems
add the xpad input driver to the kernel config
removed ncurses and alsa. unnesscary inclusions!
Merge remote-tracking branch 'upstream/master'