Updated INSTALL doc: must use libgcal 0.9.6 or higher
Updated INSTALL doc: must use libgcal 0.9.6 or higher

git-svn-id: 85993595adea9501c3608f1a84298b90251c745e@6112 53f5c7ee-bee3-0310-bbc5-ea0e15fffd5e

luizluca/google-calendar