Minor update.

Author: tatsy

README.md

@@ -36,6 +36,7 @@ You can build a shared library and all the examples by `CMake` with the followin
 ```shell
 $ git clone https://github.com/tatsy/tinymesh.git --depth 1
 $ cd tinymesh
+$ git submodule update --init --recursive
 $ mkdir build && cd build
 $ cmake -DCMAKE_BUILD_TYPE=Release -DBUILD_EXAMPLES=ON ..
 $ cmake --build . --config Release --parallel 2

src/tinymesh/polymesh/mesh.cpp

@@ -92,7 +92,6 @@ std::vector<Vec3> Mesh::getVertices() const {
     for (const auto &v : vertices_) {
         ret.push_back(v->pos());
     }
-    printf("%f %f %f\n", ret[0].x(), ret[0].y(), ret[0].z());
     return ret;
 }