ellipt demo repaired

demo/src/ellipt.cc

@@ -72,7 +72,7 @@ int main(int argc, char* argv[])
   ellipt.addVectorOperator(rhsOperator, 0);
   
   // ===== add boundary conditions =====
-//  ellipt.addDirichletBC(1, 0, 0, new G);
+  ellipt.addDirichletBC(1, 0, 0, new G);
 
 
   // ===== start adaption loop =====