message: Update README.md
  Fix namespace in the sample code.
diff: @@ -21,7 +21,7 @@ First, generate a remap table from your existing vertex (and, optionally, index)
  ```c++
  size_t index_count = face_count * 3;
  std::vector<unsigned int> remap(index_count); // you can use any other way to allocate temporary memory for the remap table
  -size_t vertex_count = generateVertexRemap(&remap[0], NULL, index_count, &unindexed_vertices[0], index_count, sizeof(Vertex));
  +size_t vertex_count = meshopt::generateVertexRemap(&remap[0], NULL, index_count, &unindexed_vertices[0], index_count, sizeof(Vertex));
  ```
  Note that in this case we only have an unindexed vertex buffer; the remap table is generated based on binary equivalence of the input vertices, so the resulting mesh will render the same way.
  