Address the Opal and Asciidoctor.js compatibility#303

Merged

obilodeau merged 2 commits intoasciidoctor:masterfrom obilodeau:doc-asciidoctor.js-stability

Jan 7, 2020

+52-4

Commits on Jan 7, 2020

doc: Explained the Opal problem in more depth and compatibility instructions
obilodeau
committed
doc: achieve npm package compatibility now and in the future (asciidoctor#187 )
obilodeau
committed