Fixed small typo, added hints on to run gala in main session
Merge branch 'stas-readme-updates'
use new api Gala.ModalProxy
fix keybinding filtering
Merge pull request #3 from jolivares/master

use new api Gala.ModalProxy
Merge remote-tracking branch 'origin/master' into no_more_segfaults
Added the PPA mention to readme.