Document prefer_system_executable
for chrome-headless
#55
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The recommended setup instructions for chrome-headless, which tell the user to install the dependencies globally using
npm -g install
, only work if we setprefer_system_executable: true
in the generator options.This should definitely be mentioned in the docs, as it currently requires digging through the code to find this line: https:/gutschilla/elixir-pdf-generator/blob/master/lib/pdf_generator.ex#L184