code: function createMultitasks(gulp, aliases){
  	for(var task in aliases){
  		if(aliases.hasOwnProperty(task)){
  			var cmds = [];
  			aliases[task].forEach(function(cmd){
  				cmds.push(cmd);
  			});
  			gulp.task(task, cmds);
  		}
  	}
  	return aliases;
  }
docs: Configure multitasks from aliases.yml