doc: bumped version to 0.10.0.

Author: agentzh

README.markdown

@@ -61,7 +61,7 @@ Production ready.
 Version
 =======
 
-This document describes ngx_lua [v0.9.20](https://github.com/openresty/lua-nginx-module/tags) released on 19 December 2015.
+This document describes ngx_lua [v0.10.0](https://github.com/openresty/lua-nginx-module/tags) released on 11 January 2015.
 
 Synopsis
 ========

doc/HttpLuaModule.wiki

@@ -10,7 +10,7 @@ Production ready.
 
 = Version =
 
-This document describes ngx_lua [https://github.com/openresty/lua-nginx-module/tags v0.9.20] released on 19 December 2015.
+This document describes ngx_lua [https://github.com/openresty/lua-nginx-module/tags v0.10.0] released on 11 January 2015.
 
 = Synopsis =
 <geshi lang="nginx">