anchor.diff:                  "token" => some_long_string_of_characters,
                   "user" => {
                       "id" => 96,
  -                    "email" => "kenny@example.com",
  +                    "email" => "kennynagano@example.com",
                       "zip" => "97201",
                       "first_name" => "Keara",
                       "last_name" => "Runolfsson",
  
positive.code: 
              {
                  user: {
                    email: "kenny@example.com",
                    password: "pass123"
                  }
              }
  
negative.code:             {
                  errors: "Some error message"
              }
  ## Sessions | Create [/api/v1/sessions/{?user,email,password}]
  + Parameters
  
        + user (object, required) - Object that wraps the user's attributes
        + email (string, required) - The users email
        + password (string, required) - The users password
  
  