Issue/2

This pull request runs an install wizard when conf/config.json does not exist. This makes it more user friendly to get the builder up and running after running npm install and starting the server.

I'd recommend that developers remove their current config.json, run npm install and use the install wizard (by visiting localhost:3000) before continuing.

This change also adds handlebars as the default template engine, so the SPA template can now be found under <project root>/routes/index/index.hbs