Merge pull request #73 from wpreul/master

Updating to work with hapi 6
Add public-host option

This feature is needed to support servers with different private and
public ip addresses, e.g. Amazon EC2 instances.

Reference:
http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/using-instance-addressing.html
Update README.md
Update README.md
Update LICENSE
Update package.json
Merge pull request #76 from arb/master

Update Documentation
Merge pull request #74 from wakayama-io/feature/public-host

Add public-host option
Create CONTRIBUTING.md
Update package.json
Upgrading to lab 4