updated install script minified URL.

Ben Reader · Ben Reader · commit 9a41c991c212 · 2018-01-02T09:30:45.000+11:00
diff --git a/README.md b/README.md
@@ -49,7 +49,7 @@ without the use of `Install-Script`.  However we **highly recommend** that you
 first before running it in this way!
 
 ```powershell
-iex (iwr https://git.io/v9rJg)
+iex (iwr https://git.io/vbxjj)
 ```
 
 ## Installing the Extension
