Update build script
Update script.
Update script.
Merge pull request #13 from ivanzhaowy/master

Update build script
Update Gruntfile.js
Merge pull request #14 from ivanzhaowy/master

Update Gruntfile.js
Merge pull request #15 from leplay/master

release alfred
Migrate libs to bower.
Fix buid script.
Merge pull request #16 from ivanzhaowy/master

Merge
Update build script.
Merge pull request #17 from ivanzhaowy/master

Update build script.
Update build config.
Merge pull request #18 from ivanzhaowy/master

Update build config.
Fix building script.
Merge pull request #19 from ivanzhaowy/master

Fix building script.
 release download.html