==> Upgrading gpg-agent
==> Downloading https://homebrew.bintray.com/bottles/gpg-agent-2.0.30_3.sierra.bottle.tar.gz
######################################################################## 100.0%
==> Pouring gpg-agent-2.0.30_3.sierra.bottle.tar.gz
==> Caveats
Remember to add "use-standard-socket" to your ~/.gnupg/gpg-agent.conf
file.
This formula is keg-only, which means it was not symlinked into /usr/local,
because GPG 2.1.x ships an internal gpg-agent which it must use.
If you need to have this software first in your PATH run:
echo 'export PATH="/usr/local/opt/gpg-agent/bin:$PATH"' >> ~/.bash_profile