constructor () {

        //  New size, including slightly cut-off height

        let canvas = Grid({ width: 512, height: 300 });

        AddToDOM(canvas, 'game');

    }
    constructor () {

        //  If you just specify the width, the height is set to match it.
        //  Here we use new grid colors too.

        let canvas = Grid({ width: 512, color1: '#3566FF', color2: '#6DC1FF' });

        AddToDOM(canvas, 'game');

    }
    constructor () {

        //  Here we use a preRender callback to fill the canvas before it gets the Grid applied

        let canvas = Grid({ 
            preRender: (canvas, ctx) => this.addGradient(canvas, ctx), 
            color1: 'rgba(100, 100, 100, 0.5)', 
            color2: 'rgba(100, 100, 100, 0.3)' 
        });

        AddToDOM(canvas, 'game');

    }