Updated readme.txt for 0.9.4.0 release

readme.txt

@@ -36,6 +36,14 @@ GLM is a header only library, there is nothing to build, just include it.
 More informations in GLM manual:
 http://glm.g-truc.net/glm-0.9.3.pdf
 
+================================================================================
+GLM 0.9.4.0: 2012-09-17
+--------------------------------------------------------------------------------
+- Added Intel Composer support
+- Promoted GTC_espilon extension
+- Promoted GTC_ulp extension
+- Removed GLM website from the source repository
+
 ================================================================================
 GLM 0.9.3.4: 2012-06-30
 --------------------------------------------------------------------------------