Making the check_es_nodes less brittle

When a new node is added to the cluster, the alert fires so we are now only checking if the nodes in the cluster is less than that specified

Removing unnecessary requirements

Removing:

PIP
Setuptools
Pep8
These should all be managed separately

Adding a Manifest to include the README file

DOH!

Bump the version for the README format change

Bumping to try and get the setup.py long description working

Initial Release of the Module for PyPi

Adding a link to download the tarball from github tags