adds role to users, default: user
Gemfile adds Devise for authorization
policies created with method helpers for models
new tests and test folders stumped out
User and Image fixtures for testing, with sample pic
tests created for roles, users, and login/out
def sign_in method for streamlining
Pundit rescue with flash message
before_filter :authenticate for Devise checking
explicit index added
sign up button relabelled to remove ambiguity
wraps sign_in/out buttons depending on signed in or not
flashes on layout properly displayed below header
Merge branch 'policies'

Adds policies and Devise with Pundit to project.