Localization for Chinese.
added explosion effects.
Fixed few localization strings bug.
Icons and launch images.
Screenshots
Update bundle identifier
Fix background image transparent pixels issue.
Update version info.
Add Flurry support.
Screenshots.
Added undo button.
Undo with bug.
Restore old value.
Can undo now, but there is another issue, the merged tile will disappear in some times.
Undo done.
Merge pull request #1 from younthu/Undo

Undo