[x] Publish to the SNS topic that sends me a text from the CLI, and receive a text.
[ ] Make a Lambda that publishes to an SNS topic to send a text. Get it so that I can invoke the Lambda from the AWS CLI and receive a text. The Lambda can optionally take parameters, because I can attach parameters to the event that will come from IoT 1-Click.
[ ] What happens if more than one origination number is available for SNS? How does a topic or subscription know which origination number texts are supposed to come from?
TODO