Flow

gistfile1.txt

[{"id":"850a2c6d.e68098","type":"twilio-api","sid":"update-this","from":"+15005550006","name":"SMS out"},{"id":"2672a104.4e7d26","type":"inject","name":"","topic":"","payload":"helloWorld","payloadType":"string","repeat":"","crontab":"","once":false,"x":248.0833282470703,"y":266.9999771118164,"z":"9a815f24.3bf388","wires":[["e758f3a5.ccf1d8"]]},{"id":"e758f3a5.ccf1d8","type":"twilio out","twilio":"850a2c6d.e68098","number":"+4455555555","name":"SMS","x":433.0833282470703,"y":143.00000762939453,"z":"9a815f24.3bf388","wires":[]}]

instructions

1) Checkout Node-Red (git clone https://github.com/node-red/node-red.git)
2) cd in node-red/nodes
3) checkout extra nodes (git clone https://github.com/node-red/node-red-nodes.git)
4) cd to the node-red root
5) npm install --production
6) npm install twilio
7) run node red (node red)
8) connect to node-red console with browser (http://localhost:1880/)
9) Click on the hamburger icon (top right) and click Import -> from clipboard
10) paste the Flow included in this gist into the popup
11) click on the canvas to secure the flow
12) double click on the twilio node (pink node labelled sms)
13) click on the pencil icon to open the credentials dialog
14) update the SID and add a API secret
15) click ok to return to the basic node settings
16) update to sms number
17) click deploy (top right)
18) click on small blue square at the left hand end of the helloWorld inject node to try and send a message.