Add back vendor/bundler recipe from old versions of repo and use it in C...

I had a version of the old locomotive-chef-repo around (that now redirects to this repo) and upon digging into it found that it had a custom 'bundler' recipe.  I added this to the vendor directory, pointed the Cheffile at it, and tested it.  This appears to resolve #58.  Not sure if this approach is kosher in the updated style of the repo, so would be happy to see a better alternative.