Update README.md

README.md

@@ -40,7 +40,7 @@ Operating systems
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 Currently we support running *Mangos* on these operating systems:
 
-* **Windows**, 32 bit and 64 bit. [Windows][20] 7 or newer is recommended.
+* **Windows**, 32 bit and 64 bit. [Windows][20] Server 2008 (or newer) or Windows 7 (or newer) is recommended.
 * **Linux**, 32 bit and 64 bit. [Debian 7][21] and [Ubuntu 12.04 LTS][22] are
   recommended. Other distributions with similar package versions will work, too.
 * **BSD**, 32 bit and 64 bit. [FreeBSD][23], [NetBSD][24], [OpenBSD][25] and