es6 the project

[michael-benin-CN]

for server: https://github.com/sindresorhus/grunt-6to5
for client: https://github.com/thlorenz/es6ify

[michaelBenin]

This will be done with es6 lands in nodejs and google chrome.

[michaelBenin]

There's also a 6to5ify.

[michaelBenin]

Doing this and using babel.