Update README.md

Author: jackbrookes

webserver_example/README.md

@@ -1,7 +1,7 @@
-This is a sample webserver, written in Python using the Flask framework. It accepts incoming POST requests, and writes the data contained in the form to a file. It uses Basic HTTP authentication.
+This is a sample webserver, written in Python using the Flask framework. It can be used in conjunction with the [HTTP POST Data Handler](https://github.com/immersivecognition/unity-experiment-framework/wiki/HTTP-POST-setup). It accepts incoming POST requests, and writes the data contained in the form to a file. It uses Basic HTTP authentication.
 
 To use it, you need some packages:
 
 ```
 pip install Flask Flask-HTTPAuth Flask-CORS
-```
+```