first commit of /firefox/tw page

the first version of /firefox/tw
To-do:
1.style it with sandstone
2.take some screenshot of fx-tw-ver
3.make it more contents
Merge pull request #57 from mingtsay/firefox-tw

first commit of /firefox/tw page
use new style: sandstone
Paste previous contents. 把之前的內容貼進來
Merge pull request #79 from mingtsay/firefox-tw
style the download button
change secondary title
let download button float:right;
download action bar
Merge pull request #81 from mingtsay/firefox-tw

Firefox tw
os detecting
styled
Merge pull request #82 from mingtsay/firefox-tw

Firefox tw