Merge pull request #167 from boardiq/master

Allow for overriding connection for version + info
Add .build_config_header to Docker::Util
Use build_config_header to send appropriate X-Registry-Config header
Cleanup parsing
Update VCR and fix Cane error
Don't #to_json the credentials
Merge pull request #169 from swipely/send-appropriate-headers

Send appropriate headers
Add 304 not modified expectation and remove start on run
Merge pull request #170 from swipely/fix-expects-and-container-run

Add 304 not modified expectation and remove start on run
Version bump (1.13.2)
Docker requires DOCKER_HOST env to use format localhost:3000 without the scheme

This commit allows a URL to be used that does not contain a scheme.  If detected, the default scheme of `http://` is added.
expose Image.get in docs
Update README and add `.get` extra information
Reduce context text
Merge pull request #175 from swipely/add-image-get-to-docs

Add image get to docs
First Unix, then http/https/tcp, then all others
Merge pull request #176 from swipely/update-connection-spec

Docker requires DOCKER_HOST env to use format localhost:3000 without the scheme
Only set local_port & local_address on (https?|tcp)
Merge pull request #182 from meyouhealth/unix-socket-hijack

Only set local_port and local_address for tcp
Clean up hijack