openssl issue when running Ruby commands

Adler @ 2020-06-12

When openssl is not correctly installed on MacOS, we'll see error messages like:

Library not loaded: /usr/local/opt/openssl/lib/libssl.1.0.0.dylib

when running commands like:

gem install rails

The solution is either to reinstall openssl through Homebrew, or Ruby itself.

For example, if reinstalling with rbenv, run:

CONFIGURE_OPTS="--with-openssl-dir=`brew --prefix openssl`" rbenv install 2.6.3

Replace 2.6.3 with the target version.