Translate menu labels to Trandional Chinese.
Translated get started page.
Translate download page into Traditional Chinese.
merged branch kayue/traditional-chinese (PR #47)

This PR was merged into the master branch.

Discussion
----------

[wip] [zh_TW] Traditional Chinese translation.

Commits
-------

a38e9f2 Translate download page into Traditional Chinese.
fb5eb14 Translated get started page.
e1bbc92 Translate menu labels to Trandional Chinese.