Added comments in examples about lambda support

Interpolation/examples/Interpolation/interpolation_vertex_with_info_2.cpp

@@ -94,6 +94,7 @@ int main()
 
   Delaunay_triangulation T;
 
+  // Note that a supported alternative to creating the functors below is to use lambdas
   Value_function<Vertex_handle, Coord_type> value_function;
   Gradient_function<Vertex_handle, Vector> gradient_function;
 

Interpolation/examples/Interpolation/sibson_interpolation_rn_vertex_with_info_2.cpp

@@ -73,6 +73,7 @@ int main()
 {
   Regular_triangulation rt;
 
+  // Note that a supported alternative to creating the functors below is to use lambdas
   Value_function<Vertex_handle, Coord_type> value_function;
   Gradient_function<Vertex_handle, Vector> gradient_function;
 

Interpolation/examples/Interpolation/sibson_interpolation_vertex_with_info_2.cpp

@@ -74,6 +74,7 @@ int main()
 {
   Delaunay_triangulation dt;
 
+  // Note that a supported alternative to creating the functors below is to use lambdas
   Value_function<Vertex_handle, Coord_type> value_function;
   Gradient_function<Vertex_handle, Vector> gradient_function;