add lsx.1 to dist

Makefile

@@ -35,7 +35,7 @@ clean:
 dist: clean
 	@echo creating dist tarball
 	@mkdir -p dmenu-${VERSION}
-	@cp LICENSE Makefile README config.mk dmenu.1 draw.h dmenu_run ${SRC} dmenu-${VERSION}
+	@cp LICENSE Makefile README config.mk dmenu.1 draw.h dmenu_run lsx.1 ${SRC} dmenu-${VERSION}
 	@tar -cf dmenu-${VERSION}.tar dmenu-${VERSION}
 	@gzip dmenu-${VERSION}.tar
 	@rm -rf dmenu-${VERSION}