Add tests information
Add docs link to README.rst
Docs style fixes
Some ActiveMQ script improvements
Change ActiveMQ download URL

Current is struggling, so changing to a better one (I hope so).
Update ActiveMQ cookbook
Add license information

fixes #14
flake8 + doc fixes
Don't use Chef for ActiveMQ

Since ActiveMQ is managed on Travis with just a script, use the same
script for Vagrant.
Merge branch 'bug/activemq_setup'
Add Python 2.6 importlib requirement

fixes #15
Fix MANIFEST.in

It was including README.md instead of README.rst (renamed some time
ago).
Demo agent get mounts with Puppet

So it will trigger Ruby symbols serialization issues.
Add Ruby symbols serialization integration test
Add Ruby compatible YAML loader

I've got some issues after applying this change, at first glance not
related to this change, but this require more testing and debugging.