Update some dependencies to fix 4 known security vulnerabilities (#26)
Update some dependencies to fix 4 known security vulnerabilities (#26)

https://nodesecurity.io/advisories/61
https://nodesecurity.io/advisories/48
https://nodesecurity.io/advisories/39
https://nodesecurity.io/advisories/118
dominicbarnes/koa-handlebars,dominicbarnes/koa-handlebars