update readme

Author: ZenLiuCN

readme.md

@@ -2,6 +2,7 @@
 this is a project build top on cef3 
 1. contains c++ app (from cef3 offical example)
 2. contains embed go websocket server(expose window action to js)
+3. with MP3,MP4[H.264] supported
 ## WHY
 Being working on some desktop solution need on winXP ;
 
@@ -15,7 +16,7 @@ already test on windows 7 x64 ,And it may only support windows
 ## HOW
 1. get mingw64 for 32bit
 1. get cmake 3.12+
-1. get go 1.8+
+1. get go 1.8+ for 32bit
 1. get cef3 binary form [binary]()
 1. build go lib via `./goserver/build.bat`
 1. build app via cmake