added option for local environment file and parallels ubuntu 14.04
the ec2 mount thing is a convenience and shouldn't keep the service from starting, as it now fails to run anywhere but on an ec2 instance or something with the same device layout
Merge pull request #130 from mehtaekta/parallels-evnfile

added option for local environment file and parallels ubuntu 14.04
optimize apt-get install to run once, as opposed to many times (faster)