Fix for issue #11 Show what's happening when installing front-end packages

@JonAbrams Giving this one last (4th) shot for tonight. Apparently node doesn't like the chaining of .on's. Ran npm test on this one and all good. Hopefully. #11 
Is this required to output the progress? Would `console.log` work instead?

I ask because 'requiring' files from deep within a third-party package makes me nervous, I could see it easily breaking with future releases of bower.