Switch master to v0.4.0.
Move slugbuilder to deis repo. Create global ENV vars with profile.d/controller_env.sh primarily for use by slugbuilder. opdemand/deis#376
Use /etc/environment instead of /etc/profile.d/controller_env.sh for global vars
Moved .write_file() call inside iteration loop for ENV keys
Updated Docker to v0.7.3.
Merge pull request #49 from opdemand/docker-0.7.3

Updated Docker to v0.7.3.
Merge pull request #47 from tombh/376-move-slugbuilder-hook

Tested, works great. Thanks very much, Tom!
Remove Authors from README
Updated Docker to v0.7.5.
Merge pull request #50 from opdemand/docker-0.7.5

Updated Docker to v0.7.5.
Switch master to v0.4.1.
Updated Docker to v0.7.6.
Merge pull request #51 from opdemand/docker-0.7.6

Updated Docker to v0.7.6, tested.
don't need both metadata.json and metadata.rb
skip docker steps if already installed

This will reduce lookups to get.docker.io on chef runs
* save a small amount of time for chef runs
* if get.docker.io is unavailable it won't break run.
Merge pull request #55 from paulczar/fix_docker

skip docker steps if already installed
Cleanup inactive runtime slugs
Merge pull request #59 from appcubator/runtime-cleanup2

Cleanup inactive runtime slugs
Fix caching of the slugs
Merge pull request #60 from appcubator/runtime-cleanup2

Fix caching of the slugs