Separate app code from configuration files

[brew]

Currently Measure is an OKI only project. The project configuration files reside with the application code. This makes it harder for other organisations to use Measure. Configuration files should be separated out into their own repository, measure-oki, which has its own Dockerfile, that uses the main Measure project. measure-oki will reference a specific release tag for measure, to ensure builds are reproducible.

• init measure-oki repo with oki configuration files from measure
• measure-oki Dockerfile using measure app, referencing a specific tagged release
• Update Dockerhub and DockerCloud to build and deploy from measure-oki rather than measure
• Documentation on how to use new setup