Ocwa import tools

[ateucher]

Tools (one exported function: ocwa_branch_export()) to prepare the repo for import into OCWA by:

1. Creating a new branch
2. Removing files that can't be imported - these are listed in the _ocwaignore file in the root of the repo
3. Cleaning README.md to comment out references to images and links that won't be available in the SRE. Basically at this point the sticker and the badges.
4. Committing the changes from 2 and 3 to the new branch and pushing that to GitHub. This branch can then be used as the basis for an import into OCWA.

[boshek]

This is amazing. Well done. I think adding a NEWS item and also your name into the DESCRIPTION file would be worthwhile in this PR.

Just a couple questions.

[ateucher]

@boshek for NEWS and DESCRIPTION - what version should I set? A dev version or 1.1 or???

[boshek]

I think leave it as a dev version? My usual process for versioning is that when the inside/outside repos are in the same state, you version it. Open to other versioning schemes though.