Added Dockerfile, services.sh and modified README

I get:
```
(airmozilla)peterbe@Peters-MacBook-Pro:~/airmozilla ((d946e7e...) %)$ docker build . airmozilla

Usage: docker build [OPTIONS] PATH | URL | -

Build a new image from the source code at PATH

  --force-rm=false     Always remove intermediate containers, even after unsuccessful builds
  --no-cache=false     Do not use cache when building the image
  -q, --quiet=false    Suppress the verbose output generated by the containers
  --rm=true            Remove intermediate containers after a successful build
  -t, --tag=""         Repository name (and optionally a tag) to be applied to the resulting image in case of success
(airmozilla)peterbe@Peters-MacBook-Pro:~/airmozilla ((d946e7e...) %)$ pwd
/Users/peterbe/airmozilla
```