add user rspect unit test
refactor video and category unit tests using context, subject and let
add fabricator gem; create video and category fabricator for unit testing
add faker gem for random object fabrication generation
add video controller tests
fix category unit test with subject correction and rspec collection matchers gem
add sessions and users controller functional tests
create review table, model, related associations, seed, and begin unit testing
add textarea client side validation for forms
add review#create nested resource/route
create and test @reviews instvar in Videos#show route
add reviews controller/test and related modifications to video spec/model/view
Merge pull request #2 from leeduan/mod1

Mod1 merged.