Merge pull request #4 from lixiaopeng/master

[Changes] polish ui and logic
Merge pull request #5 from lixiaopeng/master

[Changes] change dom function
Merge pull request #6 from lixiaopeng/master

bugfix and polish ui
fix bug and change build script
Merge pull request #7 from c4pt0r/master

fix bug and change build script
[Feature] Tweak css