Replace outdated Installation section with link

README.md

@@ -19,19 +19,7 @@ Font Licenses:
 Installation
 ============
 
-Windows
+Head to [Downloads](http://openmw.org/downloads/) to find a packaged release for your platform of choice.
--------
-Run the installer.
-
-Linux
------
-* Ubuntu (and most others): Download the .deb file and install it in the usual way.
-
-* Arch Linux: There's an OpenMW package available in the [community] Repository: https://www.archlinux.org/packages/?sort=&q=openmw
-
-OS X
-----
-Open DMG file, copy OpenMW folder anywhere, for example in /Applications
 
 Build from source
 =================