Improve Documentation

[erinspace]

http://share-research.readthedocs.io/en/latest/

The documentation is compiled on ReadTheDocs - check out the README for details on how to compile them locally.

Help us improve the docs! Try to set things up, tell us what is confusing or could use some clarification.

[zamattiac]

PR #274 has updated quickstart and creating an OAI harvester