stub release notes for 3.6

RELEASE_NOTES

@@ -6,6 +6,50 @@ This file contains ns-3 release notes (most recent releases first).
 All of the ns-3 documentation is accessible from the ns-3 website: 
 http://www.nsnam.org including tutorials: http://www.nsnam.org/tutorials.html
 
+Release 3.6
+===========
+
+Availability
+------------
+This release is immediately available from:
+http://www.nsnam.org/releases/ns-allinone-3.6.tar.bz2
+
+Supported platforms
+-------------------
+ns-3.6 has been tested on the following platforms:
+  - linux x86 gcc 4.2, 4.1, and, 3.4.6.
+  - linux x86_64 gcc 4.4.0, 4.3.2, 4.2.3, 4.2.1, 4.1.3, 3.4.6
+  - MacOS X ppc and x86 (gcc 4.0.x and 4.2.x)
+  - cygwin gcc 3.4.4 (debug only), gcc 4.3.2 (debug and optimized)
+  - mingw gcc 3.4.5 (debug only)
+
+Not all ns-3 options are available on all platforms; consult the
+wiki for more information:
+http://www.nsnam.org/wiki/index.php/Installation
+
+New user-visible features
+-------------------------
+
+  - Add an implementation of the minstrel rate control algorithm 
+    (Duy Nguyen for gsoc)
+
+ 
+API changes from ns-3.5
+-----------------------
+API changes for this release are documented in the file CHANGES.html.  
+XXX
+
+Known issues
+------------
+ns-3 build is known to fail on the following platforms:
+  - gcc 3.3 and earlier
+  - optimized builds on gcc 3.4.4 and 3.4.5
+  - optimized builds on linux x86 gcc 4.0.x
+
+Future releases
+---------------
+XXX
+
 Release 3.5
 ===========