@zaach - if I run `grunt l10n-extract` I see the following error:

```
fxa-content-server|issue-14-localize-text⚡ ⇒ grunt l10n-extract
Running "l10n-extract" task
Fatal error: Cannot read property '0' of null
```

If I cange `input-dir` to `'../app/scripts'`, all good.