Add examples of usage grinnode.live api

[stakervali]

Add examples such as

grin-wallet -r "https://grinnode.live:3413" -t /path/to/a/folder init

grin-wallet -r "https://grinnode.live:3413" -t /path/to/a/folder info

grin-wallet -r "https://grinnode.live:3413" -t /path/to/a/folder listen

[MCM-Mike]

If you run a listener on your wallet for receiving GRINs using the Grinnode.live API you should see the following output to verify your listener is working:

20211113 20:28:47.704 WARN grin_wallet_controller::controller - Starting TOR Hidden Service for API listener at address cgodjue5g7ebqv3bgrt6sfwbvq4ricibnxjwkqimu2apbdyn7c752iyd, binding to 127.0.0.1:3415
20211113 20:28:51.660 WARN grin_wallet_controller::controller - Starting HTTP Foreign listener API server at 127.0.0.1:3415.
20211113 20:28:51.660 WARN grin_wallet_controller::controller - HTTP Foreign listener started.
20211113 20:28:51.660 WARN grin_wallet_controller::controller - Slatepack Address is: grin1zxwrf5yaxlyps4mpx3n7j9kp4su3gzgpdhfk2sgv56q0prcdlzls9e6e0y

command used: ./grin-wallet -r https://grinnode.live:3413 listen