Patch version bump v1.33.6

Make Image.search respect credentials

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`

Patch version bump v1.33.4

Expose original format of `top` endpoint

Patch version bump

* Remove invalid `sha256:` match when building images

Patch version bump

Patch version bump to follow redirects

Minor version bump

* Add support for streaming container stats
* Allow passing a name to a container with the symbol hash key `:name`

Patch version bump v1.32.1

* Don't require that it be ruby 2+

Minor version bump (v1.32.0)

* Adding missing opts parameter to Docker::Volume.create
* Ensure stop & restart timeouts apply to Excon timeout for Container#stop/Container#restart
* Allow passing args to Container#attach
* Ignore files based on dockerignore
* Do not ship extra files in the gem
* Drop 1.9 support

Minor version bump

Add Container#read_file, and Container#store_file
Add Container#update
Add Image.remove
Expand Image#run and Container#exec to take additional options