Use xbindkeys instead of keylaunch: More flexibility for bindings.
Add brightness control.
Map Alt+click to middle button (paste): useful for terminal.
Remove Alt+click binding. Instead, source ~/.xbindkeysrc.scm.
+ minor cleanups
typo correction (revealed upon mounting encrypted chroot with external key)

revealed upon mounting encrypted chroot with external key
Merge pull request #233 from dimonf/patch-1

Fix entering chroot with key files.
Merge branch 'xbindkeys' of git://github.com/drinkcat/chroagh
Add comment to crouton xbindkeysrc.scm
Do not update mirror unless explicitely specificied on command line.