Merge pull request #9 from mergado/fix_in_memory_storage

Fix token handling if in memory storege is used

Author: kristiankralovic

mergadoapiclient/storage.py

@@ -28,5 +28,8 @@ def load(self):
         """Loads storage instance. Default implementation stores the
         token in memory and does nothing else.
         """
+        if not hasattr(self, 'token'):
+            return
+
         if self.token and self.token_is_valid:
             return self