From 62907a621c86c81c5acf5bc84896867611ae2c9b Mon Sep 17 00:00:00 2001
From: Nicolas Frandeboeuf <mail@nicofrand.eu>
Date: Thu, 18 Jan 2018 14:04:39 +0100
Subject: [PATCH] Add link to gist

---
 flatisfy/tools.py | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/flatisfy/tools.py b/flatisfy/tools.py
index 8e6e164..c33ceaa 100644
--- a/flatisfy/tools.py
+++ b/flatisfy/tools.py
@@ -25,6 +25,12 @@ LOGGER = logging.getLogger(__name__)
 NAVITIA_ENDPOINT = "https://api.navitia.io/v1/coverage/fr-idf/journeys"
 
 class RomanNumbers():
+    """
+    Utilities to check and convert roman numbers.
+    Part of the convertions are based on
+    https://gist.github.com/riverrun/ac91218bb1678b857c12
+    """
+    
     def check_valid(self, roman):
         if not re.match('^[MDCLXVI]+$', roman):
             return False