added tests for videos controller; added fabrication and faker gems; created fabricators for video and user
added tests for users controller (new and create actions)
re-factored users_controller_spec after watching the solution; started writing tests for sessions_controller
finished tests for sessions_controller (with the help of solution vid)
created reviews table in db, created model and controller (with create route) for reviews; added a review create form to the videos/show template; wrote basic shoulda tests for review model; started writing tests for reviews controller
added ratings to video show view
added the video rating showing on the video show page
added tests for reviews controller
created average_rating method for the video model; minor improvements to the code
re-factoring of reviews_controller, reviews_controller_spec and videos/show.html.haml view to align a bit more with the solutions
Merge pull request #5 from WebDevFromScratch/week2

Week2 part1 work