Adds research notes based on TDD as it relates to puppet.

References:
http://puppetlabs.com/blog/test-driven-development-with-puppet
http://rspec-puppet.com/tutorial/

http://terrarum.net/blog/puppet-testing-part-1.html
http://stackoverflow.com/questions/21511663/does-tdd-in-puppet-make-sense-if-positive-how-to-implement-it