Merge pull request #275 from wonglok/master

3d bug fix, add more effect, and others
page container to close nav
Merge pull request #279 from WellingGuzman/off-nav

Allow page container to close nav
use .effeckt-overlay on 3d effeckt
Merge pull request #281 from WellingGuzman/off-nav

Use .effeckt-overlay on 3d effeckt
using concat
Merge pull request #284 from WellingGuzman/concat

Using concat
a little modal improvement
Merge pull request #285 from WellingGuzman/modal

a little modal improvement