Update DefinitllyTyped to the content of this repo

[mhegazy]

Untill redirection in types-publisher is implemented, is it possible to get the @types package updated to match the definitions here? these declaration files seem to be more accurate than the ones in definitlly typed: https://github.com/DefinitelyTyped/DefinitelyTyped/tree/types-2.0/express ?

[felixfbecker]

This is pretty much true for every typing in the @types org...

[felixfbecker]

I will change the package.json name to @types/express, which will allow users to install this with npm install types/npm-express until we have microsoft/types-publisher#4