Merge pull request #128 from spkane/full-config-paths

Use full paths to config.rb and user-data to better support docker provider
Merge pull request #126 from spkane/iana-port

Convert to the official IANA port for Docker
Docker Forwarding Doc Update

Update the Docker Forwarding portion of the README.md to include a link to the CoreOS documentation on enabling remote api ports, which is an essential step when trying to get Docker Forwarding working.