fix(requirements): use git https over ssh url

- When the repo is opened, this will allow builds to be performed without
  ssh credentials for git
add(Dockerfile): Add a dockerfile
add(travis-ci): Configure travis-ci support
fix(travis): Specify python version
fix(travis): We do not need env set
Merge pull request #40 from rackerlabs/jay/DockerReady

WIP: Changes for post-repo-opening