add paperclip gem to project to handle photo file inputs
add photo input ability to the properties table
configure rails_helper to include paperclip shoulda matchers for testing
have an attached image file
validates the content type of the photo
validate the attachment content type
validate the attachment content type
add photo upload option to the form
added a "verify authenticity token" to application controller
remove the "skip_before_action" due to it making the app vulnerable to CSRF attacks
add the remotipart gem to handle file uploads in jquery
require remotipart in the javascript asset pipeline
add rmagick gem to the gemfile
add "photo" to the user_params in the properties controller
add the photo "file_tag" to the property partial
configure paperclip to access imagemagick
change the photo migration to properties
add a link to create a user, for functionality
edit the errors template