Added support for Ubuntu 14.04

I think this is a candidate for a pull request... let me know if we're at cross purposes. :) There's two things you're doing that I wasn't sure about... on Precise you're installing `libjpeg-turbo` instead of `libjpegX-dev` and you have `libjpeg-turbo` listed as a dependency in the metadata file which didn't make sense to me. I updated this to install libjpeg62-dev on 10.04 and 12.04 and libjpeg8-dev on 14.04. I had wanted to install libjpeg8-dev on 12.04 but found issues with installing it when I was running integration tests.

I've also rebuilt some of the extraneous information using Knife... the copyright data, readme, etc. and added integration testing with KitchenCI.