Fix config key name for grid reader type

src/solution01.cc

@@ -40,7 +40,7 @@ int main(int argc, char** argv)
   const int dim = 2;
   // const int dim = ptree.get<int>("grid.dim");
   const int refinement = ptree.get<int>("grid.refinement");
-  std::string gridtype = ptree.get("grid.type","structured");
+  std::string gridtype = ptree.get("grid.reader","structured");
   typedef Dune::UGGrid<dim> Grid;
   typedef Grid::ctype DF;
   std::shared_ptr<Grid> gridp;

src/tutorial01.ini

 [grid]
-manager=structured # set to structured | msh
+reader=structured # set to structured | msh
 refinement=2 # be careful
 
 [grid.structured]