anchor.diff:  ----
   
   When, "Token 2f904e245c1f5" is received in the "Authorization" header, *my-authfn* will be
  -executed with token as value. The responsability of *my-authfn* is to return a valid user
  +executed with token as value. The responsibility of *my-authfn* is to return a valid user
   or nil.
   
   If you are so inclined, you may use a different name for your token, using the **token-name** optional
  
positive.code:     (response "Hello Anonymous")))
  ----
  
  Http Basic requires a function with the responsability of
  identifying the incoming request called *authfn*.
  
  The *authfn* function should accept a _request_ as the first parameter
  
negative.code: (def tokens {:2f904e245c1f5 :admin
               :45c1f5e3f05d0 :foouser})
  
  ;; Define a authfn, function with the responsibility
  ;; to authenticate the incoming token and return an
  ;; identity instance
  
  