Update windows installation to prevent creating a non writable dir.

Installation.md

@@ -1,16 +1,10 @@
 ### Windows ###
 
-Create a new folder called Radarr in your desired installation location
-
-`Default Location = C:\ProgramData\Radarr\Bin`
-
-Place the contents of the .zip in the folder
-
-`After extraction = C:\ProgramData\Radarr\Bin` 
-
-Once this is done open the folder
-
-`Run = ServiceInstall.exe`
+- Extract the ZIP archive somewhere.
+- Launch Radarr.exe once.
+- Create a new folder called Bin in `C:\ProgramData\Radarr\Bin`
+- Copy all the contents of the extracted archive into the Bin folder.
+- `Run = ServiceInstall.exe`
 
 Radarr should now be installed as a service and auto started, check it is running by Navigating to localhost:7878 if the Web-ui opens installation is complete, if nothing happens open task Manager.