Update

Author: chutsu

.gitmodules

@@ -25,9 +25,12 @@
 [submodule "third_party/src/glfw"]
 	path = third_party/src/glfw
 	url = https://github.com/glfw/glfw
+  ignore = dirty
 [submodule "third_party/src/flann"]
 	path = third_party/src/flann
 	url = https://github.com/flann-lib/flann
+  ignore = dirty
 [submodule "third_party/src/lz4"]
 	path = third_party/src/lz4
 	url = https://github.com/lz4/lz4
+  ignore = dirty