Add space in prompt, return response when updating a tag.

pynit.py

@@ -131,9 +131,9 @@ def main(*args, **kwargs):
         original_tag = input('what tag would you like to replace? ')
         updated_tag = input('what tag would you like to use instead? ')
 
-        update_pin_tag(original_tag, updated_tag, pinboard_base_url, pinboard_auth_snippet)
+        response = update_pin_tag(original_tag, updated_tag, pinboard_base_url, pinboard_auth_snippet)
 
-        return
+        return response
 
     reddit = praw.Reddit(client_id=parsed.reddit_cid,
                          client_secret=parsed.reddit_sec,