Merge pull request #116 from andebor/master

Fix auth providers missing 'get_last_error' method

Author: vgrem

office365/runtime/auth/acs_token_provider.py

@@ -74,3 +74,6 @@ def create_access_token_request(client_id, client_secret, scope):
 
     def get_authorization_header(self):
         return 'Bearer {0}'.format(self.access_token["access_token"])
+
+    def get_last_error(self):
+        return self.error

office365/runtime/auth/oauth_token_provider.py

@@ -39,3 +39,6 @@ def acquire_token_password_type(self, resource, client_credentials, user_credent
             'resource': resource
         }
         self.acquire_token(parameters)
+
+    def get_last_error(self):
+        return self.error