code: function(name, attribute) {
      var buffer = this.vertexBuffers[attribute] = new Buffer(gl.ARRAY_BUFFER, Float32Array);
      buffer.name = name;
      this[name] = [];
    }
docs: ### .addVertexBuffer(name, attribute)  Add a new vertex buffer with a list as a property called `name` on this object and map it to the attribute called `attribute` in all shaders that draw this mesh.