Ruby version is hard to get working

[jgraham]

So to get the ruby version working, I had to

sudo apt install ruby ruby-dev
gem install bundler --user-install
export GEM_HOME=/home/jgraham/.gem/ruby/2.5.0

I'm not really sure why setting GEM_HOME is necessary, but without it I got errors about trying to write to the system gem directory.

[Nika Layzell]

@jgraham I've pushed a new version in #16 which stops using bundler/inline, instead simply using a bash script. I'd be curious how well it works for you without GEM_HOME.

[Nika Layzell]

Fixed by #13