Windows CLI - must use "Run as Administrator" for particle update

[ninjatill]

Please add to the CLI documentation, for Windows users, you must right-click on the command prompt and use "Run as Administrator" to make some of the CLI commands work. I spent a better part of an hour installing and re-installing node.js and the CLI trying to get "particle update" to work. After running the command prompt as admin, all worked as expected. I read the re-read the documentation trying to find my error. I should have known better but the documentation did not remind me.

Please and thank you.