keenio: begin update to 3.0 for #327

/cc @calvinfo @ianstormtaylor @yields starting to update this one, we just need to wait for the fix so the module can load without AMD and it should be pretty much good to go!
yeah we should probably add that as an option and make it default. the problem is if a user is using analytics.js to load Keen for graphing as well, it would break compatibility.