Added devise gem for users
Installed devise
Added bootstrap classes to devise forms
Updated navbar with user links
Added plan model and db table
Added association for plans and users
Added sign up links to home page
Added plan variables and params to home page
Modified sign up form
Added stripe and figaro gems
Added stripe keys
Updated forms for stripe
Added stripe js
Modified devise for stripe
Fixed typos in Application Controller
Updated routes file with new devise controller
Added notice and styles