fixed array lookup in iterator which was undefined

Without the fix i got an error in the following line https://github.com/zazl/lsjs/blob/master/lsjs.js#L25

`this.array` was undefined and threw an error 

```js
//index.html

  lsjs({
  	baseUrl: "./"
  });

  lsjs(["./test"]);

```

```js
// test.js

lsjs(['./test1'], function(test1){
	test1.alert();
});

```