Push to Phone Numbers and Emails

NEW: Now you can push to users on Spontit by defining their phone numbers and emails in a call to the API.

In addition, the users you define do not have to follow your channel.

(However, they must follow your channel if you push to them by listing their username. The above exception is only true when you are defining the users by their phone number or email.)

Users who use your service simply sign up for Spontit with the same phone number or email they used to sign up with your service. Then you can push directly to them.

See Step 11(a) in the TL;DR section of the README.md to start.