Merge remote-tracking branch 'mmn/simple_indentation_error' into develop

* ADD patch by Mikael Nordfeldth.
 * FIXES wrong identation level on a unittest docstring.
 * CLOSES issue #11.

gnupg/test/test_gnupg.py

@@ -571,7 +571,7 @@ class GPGTestCase(unittest.TestCase):
                         "Exported key should be private")
 
     def test_import_only(self):
-	"""Test that key import works."""
+        """Test that key import works."""
         self.test_list_keys_initial_public()
         self.gpg.import_keys(KEYS_TO_IMPORT)
         public_keys = self.gpg.list_keys()