Implement travis-ci for custom cookbooks

[patcon]

http://about.travis-ci.org/docs/user/getting-started/

Further reading:

• http://technology.customink.com/blog/2012/08/03/testing-chef-cookbooks/
• http://www.opscode.com/blog/2012/07/20/on-the-level-testing-your-infrastructure/
• http://www.opscode.com/blog/2012/08/17/announcing-test-kitchen/
• https://speakerdeck.com/u/matschaffer/p/test-driven-deployment

Tools:

• https://github.com/michaelklishin/sous-chef
• https://github.com/customink/strainer