inventotron-3000
install and use at least Ruby 2.2.0, e.g rvm use 2.2.1
install gems gem install squib
run: ruby hackspace_cards.rb
Troubleshooting
pkg-config.rb:319:in `parse_pc': .pc for libffi doesn't exist. (RuntimeError)
then
brew reinstall libffi
export PKG_CONFIG_PATH=/usr/local/opt/libffi/lib/pkgconfig```