Installation instructions are outdate

[marcdraco]

Probably a minor thing, but I'm only weeks into Arduino use and the current way to install libraries seems to be to use the library manager to install the ZIP directly.

This works fine although I really wish they still supported the "copy and paste" version as that would make it easier to develop and debug, I suspect.

Anyway, I got it loaded so I can give it a go now. Why does USB have to be such a right royal pain the in butt?!