gameux: Add initial header for gameux.dll.
diff --git a/.gitignore b/.gitignore
index bdd4aa8..7ea85a6 100644
--- a/.gitignore
+++ b/.gitignore
@@ -160,6 +160,7 @@
 include/endpointvolume.h
 include/exdisp.h
 include/fusion.h
+include/gameux.h
 include/hlink.h
 include/htiframe.h
 include/iads.h