Implement Lists and ListTimeline feature #4

I'd like to operate ListTimeline more convenient.


Now
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![screen shot 2014-09-13 at 4 13 51 am](https://cloud.githubusercontent.com/assets/3464295/4255056/4ba45d2c-3ab1-11e4-906a-64599452dd96.png)


Future
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```bash
[nekova_] :lists
[$li] nekova_/listA
[$lj] k0kubun/listB
[$lk] nekova_/listC

[nekova_] :list $lj
```