Revert "[etcd]"

This reverts commit 6bfe737a4b1607224b59c3605601a9408d9387d8.
[etcd]
- issues with the etcd-rb gem, reverting back
[tests]
- removing the graphite references
[docker/info]
- adding the docker hostname
[docker/info]
- changing the name of the state to running
Update config.rb
[config/default]
- reading from the environment vars
[config/default]
- adding environmental varialbles into the default config - making it eaiser to merge in docker
- fixing the typo
- testing the git commit hook
- adding the ruby prefix
- moving straight into the prog
a few changes
- adding sshd
- allowing us to set the socket
- moving the volume mapping outside
- adding the changes
- running without supervisord
[backend]
- wrapped the backend operations in a generate error wrapper
- added the etcd/zookeeper delete and paths methods

[config]
- added option to expose non running containers
- cleaned up some configs options

[registrar]
- cleaned up the code for container collection and service document generating
- added the pruning method along side ttls
Update README.md
adding the ipaddress environment var