config:push with .env doesn't handle export or double quotes

_From @glenwong on June 4, 2015 23:19_

If you have environment variables in your .env file that are surrounded by double quotes or start with an export they aren't handled correctly when pushed to deis. For example:

export REDIS_URL="redis://localhost:6379"

ends up as

export REDIS_URL: "redis://localhost:6379"

Where "export REDIS_URL" is the key and the value is still surrounded by double quotes which can then cause things to fail when the config is referenced.

_Copied from original issue: deis/deis#3796_