adds #edit and #update actions to posts_controller
refactors post controller
adds require statement for capybara in spec_helper.rb
Merge branch 'development' of https://github.com/fab9/devbootcat into update-action
narrows scopes of posts routes
 adds post controller integration with devise
solves merge conflict in post_controller
Merge pull request #27 from fab9/post-controller-devise-integration

Post controller devise integration. 
Has one view test failing