change tests to specs
remove authentication before_action from articles controller, replace with pundit authorization using NullUser class
add controller tests, incomplete
allow comments to be made and only shows them if approved
reclassify edit spec as view spec
fix rubocop errors
comment failure redirects back to article show page
temporary commit for Eric
add policy-based approval for comments
refactor comments policy
uncomment authorization for comment approval
fix rubocop errors
add omniauth and user authentication requirements for commenting
update readme
fix rubocop errors
Merge pull request #32 from DerekMaffett/ch9

Merge chapter 9 changes