Added Andrew Galante to the CREDITS file. I forgot it yesterday.

git-svn-id: https://assimp.svn.sourceforge.net/svnroot/assimp/trunk@111 67173fc5-114c-0410-ac8e-9d2fd5bffc1f

CREDITS

@@ -0,0 +1,11 @@
+
+Open Asset Import Library (Assimp)
+Developers and Contributors
+===============================================================
+
+The following is the list of all constributors.
+Thanks for your help!
+
+- Andrew Galante,
+submitted patches to make Assimp compile with GCC-4, a makefile and the xcode3 workspace.
+