Promises as promised

I have added Issues 12 & 13 to the github. 12 is the Promises split from
Issue 6. Issue 13 is something I thought of while doing that. The other
issues I will do for next time (if there is a next time!)

https://github.com/w3c/dnt/issues

Received on Tuesday, 13 December 2016 16:30:13 UTC