function getPaddedBufferSize( bufferSize ) {

    	return Math.ceil( bufferSize / 4 ) * 4;

    }
Get the required size + padding for a buffer, rounded to the next 4-byte boundary.
https://github.com/KhronosGroup/glTF/tree/master/specification/2.0#data-alignment

@param {Integer} bufferSize The size the original buffer.
@returns {Integer} new buffer size with required padding.