Renaming "aws" to "awsbox" in various things
Add hooks for tying awsbox SMTP settings to Amazon SES.

There is a deployment helper script "deploy.js" which will read an
encrypted file "awsbox-secrets.json.gpg" to obtain the necessary
credentials and pass them to the instance.  This file is not checked
into the repository, for security reasons.
Use promises for control-flow in deploy.js
Fix some nits with promise usage.
Merge pull request #117 from mozilla/awsbox-with-ses

Add SES credentials to awsbox deployment