callback check call status
updated sms removed deprecated sms method
added call timeout and unanswered call sms logic
Merge pull request #20 from gordonwilkinson/feature/15-as-a-tc-i-will-receive-a-sms-text-alerting-me-to-any-unacknowledged-reminder

Feature/15 as a tc i will receive a sms text alerting me to any unacknowledged reminder