First pass Postman collection + env var set

[seahorseing-around]

Hello from over the pond!,

I've been keeping myself sane during lockdown building a track for my Cub Pack! When I found your project and it's extremely well documented API I knew I had to turn my hand to building a timer mechanism with a few sensors I have lying around!

Whenever I pick up a knew API I usually build a Postman collection to get to grips with it and work it out before getting into code (if you haven't used Postman I'd highly recommend. I thought you, or other people like me might find this helpful. If you agree please do incorporate into your project. If you'd rather not, no worries.

I'm working on a python based timer system to run easily on a Raspberry Pi i'll build into the track. Keeping it simple and easy to tweak. I wasn't planning to send that your way as I see you have a very repeatable system with your .jar but if it's something you think you'd like to include I'd be happy to share once it's done.

[jeffpiazza]

Could you please add a README with a paragraph or two to set context, and at least linking to postman.com?

[jeffpiazza]

Although application/x-www-form-urlencoded is the most common content-type, and probably the only one presently sent from derby-timer.jar, multipart/form-data would also be understood by either Apache or nginx. So I'm not sure if this isn't slightly too specific.

[jeffpiazza]

Also note that I'm hoping to make some progress on #79 over the next few weeks/months, with some likely additions to the API to support streaming timer log data to the server.