[BR/EC/RH][74636434] Read environment file from location specified by ENV_FILE env var.

If the ENV_FILE environment variable is specified, then read the
environment configuration from that location instead of .env or
.env.local.
[BR/EC/RH][74636434] Remove old definition of get-env.

This was Brian's fault.
[BR/SH/EC][74636434] Bump version to 0.2.0
Merge pull request #2 from primedia/etc-rentpath

Modify clj-config to work with /etc/rentpath.cfg