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"
Update puppetlabs-rabbitmq dependency

Nova can now use puppetlabs-rabbitmq < 4. Updated the dependency
to reflect this change.

Change-Id: I97866fa6f712f22fc822c22ec2bd0d22e1eb37b9