4.0.0 - 2014.1.0 - Icehouse Release

Updated Modulefile and README.md for 4.0.0 release.

Change-Id: I2f9216dff0086c827e165028fdb7539e7b768a1b
Merge "4.0.0 - 2014.1.0 - Icehouse Release"
Merge git://github.com/puppetlabs/puppetlabs-nova