Update README.md

Transferred ownership, updated links.
Added field rating in Review model
Merge pull request #21 from open-review/feature-db-rating-in-review

added review field in Review model
paperform frontend made interactive
added hooks for scrapers, added ajax in form
Fixed PIP style indention
added arxiv scraper
Small js tweaks
Better error handling
Removed invalid doc_id help_text
Repaired tests
Merge
Merge branch 'master' into feature-nice-paper-review-form
enabled caching for scrapers
Modularised review section
added latex support
Scraped papers more informative. Added URL field
More sophisticated caching
Added cache() and get_tree() to Review
Added comment threads and placeholder icons