Added support for 'Authorization: Bearer <TOKEN>' header in Request.token property.

Also added a test case for that kind of header.

tests/test_requests.py

@@ -180,6 +180,16 @@ def test_token():
 
     request, response = app.test_client.get('/', headers=headers)
 
+    assert request.token == token
+    
+    token = 'a1d895e0-553a-421a-8e22-5ff8ecb48cbf'
+    headers = {
+        'content-type': 'application/json',
+        'Authorization': 'Bearer {}'.format(token)
+    }
+
+    request, response = app.test_client.get('/', headers=headers)
+
     assert request.token == token
 
     # no Authorization headers