Updated installation guide for jclouds 1.6.1
Updated release notes for jclouds 1.6.1
Merge pull request #143 from rackerlabs/jclouds-1.6.1-releasenotes

Updated release notes for jclouds 1.6.1
Merge pull request #144 from rackerlabs/jclouds-1.6.1-installation-guide

Updated installation guide for jclouds 1.6.1