updated gemfile with testing gems
installed rspec
required capybara/rspec in spec/spec_helper.rb
added to rspec config, added configuration for rspec and factory_girl in application.rb
added notes on Model specs
added models subdirectory, added User specs
updated schema, added user specs
generated spec files for comments, posts
wrote more specs for user, updated notes, started writing specs for comments
added models for post and comment
required posts and comments fields to not be null