add include dirs back

binding.gyp

@@ -113,6 +113,7 @@
       "include_dirs": [
         "<!@(node utils/find-opencv.js --cflags)",
         "<!(node -e \"require('nan')\")",
+        "<!(node -e \"require('./include_dirs')\")"
       ],
 
       "cflags!" : [ "-fno-exceptions"],

include_dirs.js

@@ -0,0 +1,14 @@
+// Outputs the path to public node-opencv header files.  This is used when
+// building other native node modules that require access to the
+// node-opencv Matrix base class.
+//
+// To use this file, add something like the following to your binding.gyp:
+//
+//      "include_dirs": [
+//        "<!@(pkg-config --cflags opencv)",
+//        "<!(node -e \"require('nan')\")",
+//        "<!(node -e \"require('opencv/include_dirs')\")"
+//      ],
+//
+var path = require('path');
+console.log(path.relative('.', path.join(__dirname, 'inc')));