modify readme

README

@@ -2,7 +2,7 @@ Beego
 =======
 Beego is an open source version of the scalable, non-blocking web server
 and tools that power SNDA's CDN system. Documentation and downloads are
-available at https://github.com/xiemengjun/beego
+available at https://github.com/astaxie/beego
 
 Beego is licensed under the Apache Licence, Version 2.0
 (http://www.apache.org/licenses/LICENSE-2.0.html).
@@ -11,6 +11,6 @@ Installation
 ============
 To install:
 
-    go install github.com/xiemengjun/beego
+    go install github.com/astaxie/beego
 
-go version: go1 weekly
\ No newline at end of file
+go version: go1 release
\ No newline at end of file