Issues with using Babel

[cdeutsch]

I'm running into an issue with using both Babel and Sugar with io.js which was recently switched to in #29

Repro:
https://github.com/crdeutsch/iojsbabel

My app is requiring sugar way before express-react-views requires babel.

I can require babel before sugar but then express-react-views will cause an error because babel can only be required once.

In addition Babel doesn't recommend using itself in libraries:
https://babeljs.io/docs/usage/require/

Would it make sense to remove all .JSX parsing libraries as a dependency from express-react-views?

Or at least have an option to skip the require call to babel?

[zpao]

It would probably make sense to have an option to disable the require hook. It exists in the view layer so that we can clear the cached require, otherwise you wouldn't be able to see changes to views without restarting the whole app (I learned this the hard way when I wrote this thing, that first website sucked to work on).