use npm start

[max-mapper]

Hi, (written on an iPhone, apologies for terseness)

Instead of requiring users to install global modules (eg jake) you can instead use the npm start feature. That way you would only need to type npm install and npm start to get the demo running and you can put jake into the devDependencies

[jinroh]

working on it :+1:

also i plan to migrate to grunt (#61).