Update authorization_spec.rb

fixes a typo!
Merge pull request #69 from theotherstupidguy/patch-1

Update authorization_spec.rb
Accept Bearer in HTTP Authorization
Add generate_refresh_token method
Move oauth2 module to own file
Expose client_secret so it can it be used in client' application
Ignore swp files
Put refresh token togheter with access token as required
Add site column to clients