move node_mapnik to vendor dir

binding.gyp

@@ -37,6 +37,7 @@
         './include',
         './vendor/agg/include',
         './vendor/mapnik/include',
+        './vendor/node_mapnik/include',
         '<(SHARED_INTERMEDIATE_DIR)/',
         '<!@(pkg-config freetype2 --cflags-only-I | sed s/-I//g)',
         '<!@(pkg-config protobuf --cflags-only-I | sed s/-I//g)',

src/node_fontnik.cpp

@@ -1,5 +1,5 @@
 // node-mapnik
-#include <node_mapnik/mapnik_fonts.hpp>
+#include "mapnik_fonts.hpp"
 
 // fontnik
 #include <node_fontnik/glyphs.hpp>