var Grade = require('./src/node-grade');
var grade = new Grade({
     img : './res/inside-out.jpg'
 });
/*
[ { rgba: [ '107', '60', '154', '255' ],
    occurs: 63,
    brightness: 84.769 },
  { rgba: [ '59', '1', '152', '255' ],
    occurs: 98,
    brightness: 35.556 } ]
*/