Merge branch 'master' of github.com:libigl/libigl

Former-commit-id: 13d21c7ab385eb92257c5c9b7ee596e0f438b5a0

tutorial/203_CurvatureDirections/main.cpp

@@ -17,7 +17,7 @@ int main(int argc, char *argv[])
 {
   using namespace Eigen;
   std::string filename = "../shared/fertility.off";
-  if(argc>=1)
+  if(argc>1)
   {
     filename = argv[1];
   }