How to access attr method from helpers.rb

[obilodeau]

Hi @mojavelinux,

I tried fixing the issue you highlighted in #54 regarding breaking the config with: https://github.com/obilodeau/asciidoctor-backends/tree/feature/more-resistant-config

But the code can't seem to call attr properly. I tried importing a few things but it didn't work. What do I need to import to be able to call attr ?

This is the first ruby code I write so feel free to give me advice and/or refocus my attention on an improved implementation if you think this shouldn't be in helpers.rb.

Thanks!