Express integration

[redbugz]

I wrote an integration for generic Express support, especially for template engines that don't support their own integrations like EJS. I based it off of the handlebars and react integrations.

https://github.com/redbugz/express-intl

I would love some feedback on the approach. I've set up things a little different from some of the demo express projects. I plan to add client-side support next.