Update the code of JS samples for the new version of engine.
Merge pull request #14 from natural-law/develop

Update the code of JS samples for the new version of engine.
Remove the JS binding & JS samples.
Merge pull request #16 from natural-law/develop

Remove the JS binding & JS samples.
Update the sample code for the latest engine.
Merge pull request #18 from natural-law/develop

Update the sample code for the latest engine.
Update the sample code for the latest engine.
Merge pull request #20 from natural-law/develop

Update the sample code for the latest engine.