anchor.diff:  Signing
   ~~~~~~~
   
  -One of the main parts of _buddy_ is a "Signing framework", that is mainly based on django's 
  +One of the main parts of _buddy_ is a "Signing framework", that is mainly based on django's
   link:https://docs.djangoproject.com/en/1.6/topics/signing/[Cryptographic signing]
   library.
   
  
positive.code: it, all builtin authentication backends implements this authorization protocol.
  
  Some authentication backends requires specific behavior on authorization layer (like http-basic
  that should return `WWW-Authenticate` header when request is unauthorized). 
  
  NOTE: You can overwrite the default behavior, passing your own exception handler function as
  `:unauthorized-handler` keyword parameter to backend constructor.
  
negative.code: - link:https://github.com/niwibe/buddy/tree/master/examples/oauthexample[Use session backend with oauth2 using Github api.]
  
  
  For run examples, you should be at project root directory and execute `lein with-profile examplename run` where
  examplename can be `sessionexample` or `oauthexample` for this moment.
  
  
  How to contribute
  -----------------
  
  