Basic rate-limiting middleware for express

Provides a `bestzip` command that uses the system `zip` if avaliable, and a Node.js implimentation otherwise.

Slow down repeated requests; use as an alternative (or addition) to express-rate-limit

Basic wrapper for navigator.mediaDevices.getUserMedia with automatic fallback to navigator.getUserMedia

Parse HTTP set-cookie headers in JavaScript

Converts numbers into a more human-friendly format. E.g. 123456 becomes 123k. Similar to `ls -lh` or Stack Overflow's reputation numbers.