Update about.md

Author: omansour

doc/about.md

@@ -4,7 +4,7 @@
 
  * manage multiple servers with consistent hashing based on the keys
  * manage multiple Symfony services with different configuration
- * bind any event to increment nodes and collect timers
+ * bind any event to increment nodes, set gauges and collect timers
 
 ## Credits
 
@@ -13,4 +13,4 @@ Bundle provided by the M6Web open source initiative.
 our blog : http://tech.m6web.fr/ (french)
 and twitter : https://twitter.com/TechM6Web (french)
 
-[TOC](../README.md)
+[TOC](../README.md)