Add extra info on oref0-setup with xdrip-js Logger

[samgladstone]

Perhaps this isn't the best way of flagging this, but I think it's important to make people aware about the separate Logger config.

[samgladstone]

Raised an issue for the setup secript

[samgladstone]

I've run out of time this evening, but it might be worth changing the install page instructions.

Under Be prepared to enter the following items (click here to expand list): it could flag up this issue too

[inventor96]

This is probably unnecessary due to openaps/oref0#1397 (comment)