added pry to test group
added Fabrication gem
video controller spec - video and category fabricator
testing different syntax due to bugs
more syntax changes to videos controller spec
video controller spec and fabricators
user fabricator
users and sessions controller specs
DRYed sessions controller spec
added examples for session[:referer]
added review  and initial spec
added average rating calculation
removed Factory-Girl from Gemfile
added recent_reviews method and spec
added category Fabricator for the category column
reviews controller - spec - fabricator and tweaks
reviews counter_cache on videos and recent_reviews method
added @reviews and @video examples
bugs creatd by user validation on reviews - and using database_cleaner
extracted review_params to private method