Add style as submodule
Add grunt-stencial
Refactor index.html
Init submodule
Merge pull request #1 from ivanzhaowy/master

Init PR
Update build script
Add footer/header/index.
Merge pull request #2 from ivanzhaowy/master

Merge
Add android.html
Add terms.html
Add grunt-connect-rewrite
Refact basic layout
Merge pull request #3 from ivanzhaowy/master

Merge
 about.html & optim images