Update README

README.md

@@ -47,6 +47,17 @@ This is a playlist for everybody.
 - No channels dedicated to any particular political party
 - No channels made for a country and funded by a different country
 
+Feed sources
+============
+
+It can be quite hard to find up to date URLs, here's a list of sources:
+
+- https://github.com/iptv-org/iptv/tree/master/streams
+- https://github.com/iptv-restream/iptv-channels/tree/master/channels
+- https://github.com/Onemars/iptv-1/tree/master/channels
+- Youtube: As long as the channel is live and its URL doesn't change (check the age of the stream, the number of viewers..)
+- Dailymotion: Same criteria as for youtube
+
 Format
 ======