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).
set identity to hostname if not explicitly set - closes #16
raise exception when required pycrypto is missing
Work with plugin.activemq.base64 configurations Fixes #17

* cleans up flak8 errors
* decodes messages when returned
* support deserializing !ruby/syn Fixes #13