Mention --parent default in readme

[michielbdejong]

trafficstars

Looking at the code and at https://github.com/sharafian/moneyd#quick-start, it seems that if you don't explicitly configure a parent, this will connect to client.scyl.la, right? Worth explaining in the readme probably?

[sharafian]

The configure command specifically will look in connector_list.json and pick a random one for you (unless you specify one with --parent). All other commands require parent to be specified

[michielbdejong]

OK! Worth explaining in the readme probably?