Utilize twilio to sign users up to 3Caretakers by text
(1) Install requirements in package.json
(2) Start the server with node index
(3) Start the ngrok server and update the server address in twilio profile settings (current=https://c1bf5265.ngrok.io)
(4) Verify caller phone number in twilio profile settings.
(5) Send your text to 12082955052
