gabrielecirulli/2048 — pull request #37 by TimPetricola (2014-03-12 19:16:36+00:00)
Title: Fix undefined best score

Revert "small change in scoremanager"
This reverts commit 88278792be80739c303968d2e4ff31a4eba317b6.

In javascript, `"undefined"` is evaluated as `true`.

```js
"undefined" || 0 // => "undefined"
```