message: Convention of mesh ply header to match  pcl-1.7(Kinetic)
diff: @@ -86,7 +86,7 @@ bool outputMeshAsPly(const std::string& filename, const Mesh& mesh) {
  }
  if (mesh.hasTriangles()) {
  stream << "element face " << mesh.indices.size() / 3 << std::endl;
  - stream << "property list uchar int vertex_index" << std::endl;
  + stream << "property list uchar int vertex_indices" << std::endl; // pcl-1.7(ros::kinetic) breaks ply convention by not using "vertex_index"
  }
  stream << "end_header" << std::endl;
  size_t vert_idx = 0;
  