Localization

Here's an improvement to handle Localizations.

Now, you can add a new localization with Xcode and it will create automatically the appropriate localized folder /

Here's the result when you add a new localization

In Xcode
![Capture d e cran 2013-01-21 a 09 59 42](https://f.cloud.github.com/assets/1521015/82448/f982be0c-63a8-11e2-9289-de10f5ecbfa7.png)

![Capture d e cran 2013-01-21 a 09 59 53](https://f.cloud.github.com/assets/1521015/82449/fc5016d4-63a8-11e2-85be-ee75d8dbdb63.png)

In the finder:
![Capture d e cran 2013-01-21 a 10 06 25](https://f.cloud.github.com/assets/1521015/82455/dc041ae6-63a9-11e2-8dc9-32d41453fe26.png)

Note: at the moment, no new localization added. Screen captures are provided to see what happen when you add a new localization.