Add rmagick gem
update Gemfile.lock
add rmagick gem to production
Merge branch 'add_images'
Add Dropbox storage to Paperclip
Merge branch 'add_images'
Add ordering by principle number to principles
add paperclip dropbox storage
Merge branch 'add_images'

Conflicts:
	Gemfile
	Gemfile.lock
	config/dropbox.yml
Update `principle.rb`