Add suggestions for how to get a phone number to the onboarding workflow

[blanchardjeremy]

The biggest push back I've heard when I've suggested this to folks is that they don't want to get a second phone or second phone number.

I think the GUI onboarding process should advise folks on how to get a phone number and really try to address their concerns that this is a "really hard task." I don't think it should only be in the documentation. Or if it is in the documentation, the button to the documentaiton should be pretty prominent.

Best options I can think of:

• Google Voice - best for most folks, probably
• SMSPool - Cheapest if you need more than one

[blanchardjeremy]

Okay the new documentation is closer!

I'm sort of re-iterating a point above that may not need to be re-iterated, but here it goes.

I think the screen below should include a link to this page to help people get a phone number. https://observervault.org/docs/configure