Updated Preface for new docs
Merge pull request #159 from edx/markhoeber-preface-update

Updated Preface for new docs
Run Acceptance Tests on Travis
TE-497
Merge pull request #154 from edx/ammar/te-497

Run Acceptance Tests on Travis
Added Opaque Keys Support

- Updated CSV names
- Updated URL regex
- Refactored view tests
Updated Display of Opaque Keys