Traditional Chinese translation of chapter 8: It's a small world.

Ref. #65 
![screenshot 2014-10-03 02 10 41](https://cloud.githubusercontent.com/assets/1000669/4495838/89b97f26-4a5f-11e4-8c6b-565acaa72ac5.png)

![screenshot 2014-10-03 02 10 48](https://cloud.githubusercontent.com/assets/1000669/4495836/89b5b5a8-4a5f-11e4-866a-3552839bbc58.png)

![screenshot 2014-10-03 02 10 56](https://cloud.githubusercontent.com/assets/1000669/4495837/89b869ba-4a5f-11e4-9f9b-e24b05399223.png)