bumped version to 0.5.13.

Author: agentzh

README

@@ -8,8 +8,8 @@ Status
     This module is under active development and is production ready.
 
 Version
-    This document describes ngx_lua v0.5.12
-    (<https://github.com/chaoslawful/lua-nginx-module/tags>) released on 4
+    This document describes ngx_lua v0.5.13
+    (<https://github.com/chaoslawful/lua-nginx-module/tags>) released on 12
     August 2012.
 
 Synopsis

README.markdown

@@ -18,7 +18,7 @@ This module is under active development and is production ready.
 Version
 =======
 
-This document describes ngx_lua [v0.5.12](https://github.com/chaoslawful/lua-nginx-module/tags) released on 4 August 2012.
+This document describes ngx_lua [v0.5.13](https://github.com/chaoslawful/lua-nginx-module/tags) released on 12 August 2012.
 
 Synopsis
 ========

doc/HttpLuaModule.wiki

@@ -10,7 +10,7 @@ This module is under active development and is production ready.
 
 = Version =
 
-This document describes ngx_lua [https://github.com/chaoslawful/lua-nginx-module/tags v0.5.12] released on 4 August 2012.
+This document describes ngx_lua [https://github.com/chaoslawful/lua-nginx-module/tags v0.5.13] released on 12 August 2012.
 
 = Synopsis =
 <geshi lang="nginx">