README description updated

Author: Alexandru DAMIAN

README.md

@@ -1,4 +1,20 @@
 SnFChat
 =======
 
-Store and Forward UDP chat - for use on AdHoc networks
+Store and Forward UDP chat - for use on AdHoc networks
+
+This  project  implements a store-and-forward protocol for
+text messages over ad-hoc wirless networks.
+
+It uses UDP broadcast to send simple packets to all the group.
+When a packet is received, it is repeated if the destination is 
+not reached. 
+
+This creates a flood effect, which is limited by the TTL of a 
+message. This flood is actually intentional in order to 
+enhance the change of message delivery.
+
+Each message has a unique id (UUID 4) to prevent multiple 
+processing of the same message.
+
+Happy hacking !