Add yeoman angular-fullstack scaffolding.
Update Travis config, add develop branch.
Update README, add travis build state.
更新 Travis config, 移除 node v0.8, 修正 compass 錯誤。
Update .travis.yml, add FireFox for test.
Revert "Update .travis.yml, add FireFox for test."

This reverts commit eef25db84175660d030dba891944c1690bfb8c44.
Update .travis.yml, modify karma test for travis.
Update Gruntfile.js, change karma browser from Chrome to PhantomJS.
Add main page partials `cover`, `about`, `poster` and `guide`.
Add stellar parallax effect.
Update main page layout.
Update main page, Add background video.
Add guide page, Add i18n.
Update guide image.
Add about page.
Update about and guide page, add localization.
Fix scss file not found problem.
Fix #1 video parallax problem.
Update some page.
Update main page style, add sticky navbar.