Disable dotenv file

[nodkz]

I use .rbenv-vars to set up environment variables.
So this patch add ability to disable .env file in repo and use any another file in system with command, for example export $(cat /u/rubygems_proxy/.rbenv-vars | xargs) && cd /u/rubygems_proxy/current && bundle exec rainbows -c rainbows.rb

[nodkz]

Tested on production, works perfectly

[mezis]

Dotenv.load! doesn't overwrite already-set environment variabled; so what am I missing?

(also, your avatar is fab ^_^)

[nodkz]

When variable is empty, for example MEMCACHIER_SERVERS="" in my environment, then dotenv override it by its value.

Non-empty values it takes from my environment. I agree with you - I noticed it yesterday, when test my pull request.

So you may decline my pull request.

[mezis]

Thanks. I'll leave it open for now as a reminder — this needs to be clarified in the README.