update README.md for wiki redirection

Author: cdgwoon

README.md

@@ -12,6 +12,7 @@ Table of Contents
 * [Installation](#installation)
 * [Sample Application Development](#sample-application-development)
 * [Test](#test)
+* [Wiki](#wiki)
 * [Support](#support)
 * [Copyright & License](#copyright--license)
 
@@ -387,6 +388,11 @@ Support
 
 Please do not hesitate to contact [email protected]/minikawoon9[email protected] for any queries.
 
+Wiki
+====
+
+Check out [wiki](https://github.com/Taymindis/nginx-c-function/wiki) for more details
+
 
 [Back to TOC](#table-of-contents)