Add release note summary

RELEASENOTES

@@ -4,6 +4,29 @@ and CHANGES files.
 
 Release Notes
 =============
+SWIG-3.0.0 summary:
+- This is a major new release focusing primarily on C++ improvements.
+- C++11 support added. Please see documentation for details of supported
+  features: http://www.swig.org/Doc3.0/CPlusPlus11.html
+- Nested class support added. This has been taken full advantage of in
+  Java and C#. Other languages can use the nested classes, but require
+  further work for a more natural integration into the target language.
+  We urge folk knowledgeable in the other target languages to step
+  forward and help with this effort.
+- Lua: improved metatables and support for %nspace.
+- Go 1.3 support added.
+- Python import improvements including relative imports.
+- Python 3.3 support completed.
+- Perl director support added.
+- C# .NET 2 support is now the minimum. Generated using statements are
+  replaced by fully qualified names.
+- Bug fixes and improvements to the following languages:
+  C#, Go, Guile, Java, Lua, Perl, PHP, Python, Octave, R, Ruby, Tcl
+- Various other bug fixes and improvements affecting all languages.
+- Note that this release contains some backwards incompatible changes
+  in some languages.
+- Full detailed release notes are in the changes file.
+
 SWIG-2.0.12 summary:
 - This is a maintenance release backporting some fixes from the pending
   3.0.0 release.