fixed documentation for banish
fixed documentation for banish

banish actually warps to the specified corner of the current window, not
the screen.

darcs-hash:20081212191819-18a2b-710c812adaac7542b4d28f2a9b1c9ee3e41d2c0d

yzhou61/xmonad-contrib,yzhou61/xmonad-contrib,yzhou61/xmonad-contrib