Support Docker Beta

This adds support for the docker beta for mac/windows which no longer uses 192.168.99.100. It may also add native linux support, that has not been tested.

Add troubleshooting info to Makefile

0.0.4

Add link to troubleshooting in Makefile

Fix Makefile if/else issue.

Merge pull request #1 from articulate/fix-makefile

Needs to be else, not else ifeq

Handle case where docker-machine is not initialized

This handles the case where you have not yet run eval $(docker-machine env default) and tells you to do so.

First official release.

This is the first official release. Releasing it as 0.0.1 until we have more adoption and can call it "stable".