Update to express 4.4.x, include connect

Riding on the heels of pull request #24, this updates the dependencies to express 4.4.x and includes connect as a dependency (which is required with pull request #24).

We’re seeing failures with the “what’s in query” problem when using express 4 vs express 3.  Most new users default to use express 4, so by including express 4 in expressworks, the problem solutions should align.  More information can be found in this nodeschool issue: https://github.com/nodeschool/discussions/issues/327.

I have verified all solutions pass (assuming pull request #24 was included) after applying these changes (when the nodeschool user is using the latest versions of dependencies).