Included the capybara-email gem.
Extracted the expect_content into marcos.
Added the user resets password feature test spec.
Moved the follow! feature into user model.
Set up the mail delivery method to letter_opener in development environment.
Added the invite friends feature and model, controller test specs.
Added a feature test spec for users inviting friends.
Refactored by solution video.
Moved generate token to tokenable. Added a shared example for tokenable.
Refactored by solution video.
Set up the mailgun configurations on the production.
Commented out mail's from on the production.
Commented in mail's from configuration.
Removed unused code.
Merge pull request #9 from HenrykChiu/week_5_code_review1

Week 5 code review1