Added token property to request object.

sanic/request.py

@@ -72,6 +72,17 @@ class Request(dict):
 
         return self.parsed_json
 
+    @property
+    def token(self):
+        """
+        Attempts to return the auth header token.
+        :return: token related to request
+        """
+        auth_header = self.headers.get('Authorization')
+        if auth_header is not None:
+            return auth_header.split()[1]
+        return auth_header
+
     @property
     def form(self):
         if self.parsed_form is None: