Update README.md

Author: richardmarcus

README.md

@@ -8,7 +8,7 @@ Update: Demo Builds are available now (see Releases)
 
 (Note: this system is in its really early stages. If you want to build the App yourself with Unity you should get the most recent Unity version, pull the vr branch and be prepared to receive a lot of prototype scenes.)
 
-[Demo Video](https://www.youtube.com/watch?v=oqfJCXLfVS4)
+[Demo Video](https://www.youtube.com/watch?v=Mx7HSWD5dwg)
 
 ![alt text](https://raw.githubusercontent.com/UniFormal/TGView3D/master/cicm18-demo/galaxyfaraway.png)
 ![alt text](https://raw.githubusercontent.com/UniFormal/TGView3D/master/cicm18-demo/part.png)