Merge remote-tracking branch 'upstream/master'

Former-commit-id: fe8056edc08b5218adfeae46c04e5b7a9c468950

tutorial/703_Decimation/main.cpp

@@ -14,7 +14,7 @@ int main(int argc, char * argv[])
   using namespace std;
   using namespace Eigen;
   using namespace igl;
-  cout<<"Usage: ./progressive_hulls [filename.(off|obj|ply)]"<<endl;
+  cout<<"Usage: ./703_Decimation_bin [filename.(off|obj|ply)]"<<endl;
   cout<<"  [space]  toggle animation."<<endl;
   cout<<"  'r'  reset."<<endl;
   // Load a closed manifold mesh