Copy a simple implementation from the Moby project, since importing their package would pull in too many dependencies. Fixes #320
- Use gorilla/mux for middleware. - Add Dumper, RequestID, and Logger middlewares. - Add makeURL helper
Fixes #367
For 3rd parties building binary packages, and for build consistency in general, it is very helpful to have the same set of dependencies at any time the product is built. See [tools/godep](https://github.com/tools/godep) for further details.
