docs: function resizeImage(options, callback) {
    var size = options.size.width + 'x' + options.size.height;
    if (!options.size.maintainratio) {
      size += '\\!';
    }
    var command = [
      options.convert,
      options.org,
      '-adaptive-resize',
      options.size.width + 'x' + options.size.height,
      options.path
      ].join(' ');
  
    /* Create folder if we have to. */
    var dest = lib.path.join(options.dest, options.size.name);
    if (!lib.fs.existsSync(dest)) {
      lib.fs.mkdirSync(dest);
    }
  
    /* Create resize */
    lib.exec(command, function (err, stdout, stderr) {
      callback(err, options.path);
    });
  }