update readme

@@ -264,7 +264,7 @@ usr sys idl wai hiq siq| read  writ| recv  send|  in   out | int   csw
 See also: [Performance Test Guide](https://github.com/winlinvip/simple-rtmp-server/wiki/Performance)
 
 ### Releases
-* 2013-12-25, [Release v0.9](https://github.com/winlinvip/simple-rtmp-server/releases/tag/0.9), support bandwidth test, add player/encoder/chat demos. 20926 lines.<br/>
+* 2013-12-25, [Release v0.9](https://github.com/winlinvip/simple-rtmp-server/releases/tag/0.9), support bandwidth test, player/encoder/chat demos. 20926 lines.<br/>
 * 2013-12-08, [Release v0.8](https://github.com/winlinvip/simple-rtmp-server/releases/tag/0.8), support http hooks callback, update [st_load](https://github.com/winlinvip/st-load). 19186 lines.<br/>
 * 2013-12-03, [Release v0.7](https://github.com/winlinvip/simple-rtmp-server/releases/tag/0.7), support live stream transcoding. 17605 lines.<br/>
 * 2013-11-29, [Release v0.6](https://github.com/winlinvip/simple-rtmp-server/releases/tag/0.6), support forward stream to origin/edge. 16094 lines.<br/>