Merge pull request #1 from rmahmood/master

Trimming obsolete information from README.
added a recipe to mount nfs volume, based off attributes
updated formatting
Merge pull request #2 from alop/master

Added recipe to handle mounting shared device
There should be a simple recipe for adding the horizon-gridcentric packages
added client as a dependency of dashboard, added lines to README
Merge pull request #3 from alop/horizon

Horizon
Change all vms package actions to :ugprade.