doc: emphasized that this module is a core component of OpenResty.

Author: agentzh

README.markdown

@@ -10,6 +10,8 @@ ngx_http_lua_module - Embed the power of Lua into Nginx HTTP Servers.
 
 *This module is not distributed with the Nginx source.* See [the installation instructions](#installation).
 
+This module is a core component of OpenResty. If you are using this module, then you are essentially using OpenResty :)
+
 Table of Contents
 =================
 
@@ -186,6 +188,8 @@ Synopsis
 Description
 ===========
 
+This module is a core component of OpenResty. If you are using this module, then you are essentially using OpenResty :)
+
 This module embeds Lua, via [LuaJIT 2.0/2.1](http://luajit.org/luajit.html), into Nginx and by leveraging Nginx's subrequests, allows the integration of the powerful Lua threads (Lua coroutines) into the Nginx event model.
 
 Unlike [Apache's mod_lua](https://httpd.apache.org/docs/trunk/mod/mod_lua.html) and [Lighttpd's mod_magnet](http://redmine.lighttpd.net/wiki/1/Docs:ModMagnet), Lua code executed using this module can be *100% non-blocking* on network traffic as long as the [Nginx API for Lua](#nginx-api-for-lua) provided by this module is used to handle

doc/HttpLuaModule.wiki

@@ -4,6 +4,8 @@ ngx_http_lua_module - Embed the power of Lua into Nginx HTTP Servers.
 
 ''This module is not distributed with the Nginx source.'' See [[#Installation|the installation instructions]].
 
+This module is a core component of OpenResty. If you are using this module, then you are essentially using OpenResty :)
+
 = Status =
 
 Production ready.
@@ -130,6 +132,8 @@ This document describes ngx_lua [https://github.com/openresty/lua-nginx-module/t
 
 = Description =
 
+This module is a core component of OpenResty. If you are using this module, then you are essentially using OpenResty :)
+
 This module embeds Lua, via [http://luajit.org/luajit.html LuaJIT 2.0/2.1], into Nginx and by leveraging Nginx's subrequests, allows the integration of the powerful Lua threads (Lua coroutines) into the Nginx event model.
 
 Unlike [https://httpd.apache.org/docs/trunk/mod/mod_lua.html Apache's mod_lua] and [http://redmine.lighttpd.net/wiki/1/Docs:ModMagnet Lighttpd's mod_magnet], Lua code executed using this module can be ''100% non-blocking'' on network traffic as long as the [[#Nginx API for Lua|Nginx API for Lua]] provided by this module is used to handle