Patch version bump
Patch version bump

* Fix base64 encoding for auth headers
* Add docker 1.12 and 1.13 to travis
* Add missing tag parameter for `Image.get` call at the end of
  `Image.create`

swipely/docker-api,someara/docker-api,swipely/docker-api,moritzheiber/docker-api,ComputeStacks/docker-api,ComputeStacks/docker-api,someara/docker-api,moritzheiber/docker-api