Update Chocolatey install instructions

Former method says "THIS IS DEPRECATED."
diff --git a/README.md b/README.md
index c47ac86..fee2b30 100644
--- a/README.md
+++ b/README.md
@@ -45,7 +45,7 @@
 - Install the [NuGet Package Manager](http://visualstudiogallery.msdn.microsoft.com/27077b70-9dad-4c64-adcf-c7cf6bc9970c)
 - Install [Chocolatey]:
 
-    	    @powershell -NoProfile -ExecutionPolicy unrestricted -Command "iex ((new-object net.webclient).DownloadString('https://raw.github.com/chocolatey/chocolatey/master/chocolateyInstall/InstallChocolatey.ps1'))" && SET PATH=%PATH%;%systemdrive%\chocolatey\bin
+    	    @powershell -NoProfile -ExecutionPolicy unrestricted -Command "iex ((new-object net.webclient).DownloadString('https://chocolatey.org/install.ps1'))" && SET PATH=%PATH%;%systemdrive%\chocolatey\bin
 
 - Apply Windows Updates and Reboot until Done.