Cleaned up account creation script

* Removed unecessary "export" directives
* Made sure companyName is always pushed to lower case
Cleaned up email address grabber

* Replaced hardcoded file name with user provided value
* switched --delegate flag to --as-account per deprecation notice.
New script for finding and killing instances

Simple script that nukes instances from 2 days ago. We're running this
manually until we patch up some uber script.