Updated website to include pagedlod example
[#72032388] Adds occulus helper function inside osgjs
Removes vr.js lib
Merge pull request #72 from cedricpinson/feature/occulus-refactoring_72032388

Feature/occulus refactoring 72032388
Fixed bug in getFrustumPlanes:far plane calculation was assigning wrong the distance value. Also disable culling when the current frameNumber is 0
Merge pull request #73 from jtorresfabra/fix_frustum

Fixed bug in getFrustumPlanes:far plane calculation was assigning wrong ...
Merge pull request #71 from jtorresfabra/update_website

Updated website to include pagedlod example