title: Sending messages in a channel determined by the command's sender
body: <p>I'm trying to make a command for my discord bot that sends a message on a channel the sender puts the ID of. For example: <code>f.say (id) hello world</code>, which would send <code>hello world</code> to the channel of that ID. My command handler right now is <code>if (command === `say`) {</code> already with args integrated.</p>