angle include to quote include

include/igl/igl_stb_image.h

@@ -1,7 +1,7 @@
 #ifndef IGL_STB_IMAGE_H
 #define IGL_STB_IMAGE_H
 
-#include <igl_stb_image_export.h>
+#include "igl_stb_image_export.h"
 
 namespace igl {
   IGL_STB_IMAGE_EXPORT unsigned char * stbi_load(char const *filename, int *x, int *y, int *comp, int req_comp);