Update setup.py - setting up new release

Marks version 5.5.0_2014.1 and sets status as Production/Stable
Update README.md - releases and release notes

* version notes
* compatibility notes
* release notes
* python language version support
Merge pull request #113 from vmware/v5.5.0_2014.1

v5.5.0_2014.1
Update README.md

fix typo in version compatibility statement.
Update README.md

Fix broken link to the release notes.