improves readme

README.md

 # TYPO3 Extension Repository
 ## ter.typo3.org
 
+### Prerequisites
+Make sure to have an instance of [jwilder/nginx-proxy](https://github.com/jwilder/nginx-proxy) running locally.
+An easy way to get it up and running is using [torvitas/nginx-proxy-configuration](https://github.com/torvitas/docker-nginx-proxy-configuration).
 
 ### Quickstart
 ```
 git clone https://git-t3o.typo3.org/t3o/ter.git
-make init up open log
+make init up log
+[click here](https://ter.typo3.127.0.0.1.xip.io)
 ```