Adding requirement for GiMPy 1.2

git-svn-id: https://projects.coin-or.org/svn/CoinBazaar/projects/GIMPy/GrUMPy/trunk@1112 5eb3cf9a-c56f-4155-9a08-806ae8551a6d
Adding documentation
Changing URL
Merge branch 'master' of https://github.com/tkralphs/GrUMPy
Changing name of README
Adding link to documentation
Adding link to documentation again
Adding link to documentation again
Adding gitignore
Upgrading for new version of BLImPy
Changing version number
Fixing conflict