CodePath "Intro to Node.js" course prework.

Time spent: ~4 hours

Completed:

• [] Required: Requests to port 8000 are echoed back with the same HTTP headers and body
• [] Required: Requests/responses are proxied to/from the destination server
• [] Required: The destination server is configurable via the --host, --port or --url arguments
• [] Required: The destination server is configurable via the x-destination-url header
• [] Required: Client requests and responses are printed to stdout
• [] Required: The --log argument outputs all logs to the file specified instead of stdout