compiler parameters should be configurable

[DavidGamba]

Hi, thanks for the plugin.

By default, the asciidoctor executable will use text for admonition and callout icons. If you define -a icons=font or use :icons: font in your document, asciidoctor will use foundation icons without any need to define an icons directory.

Your current compiler configuration is setting different attributes that users might not want to set, for example the icons attribute, so I can't get font or text icons to work.

I would prefer if instead of the asciidoctor_theme variable, you could set a asciidoctor_arguments variable and send that before the filename. In that way I can set everything I want.

WDYT?

[dahu]

You're right. The compiler stuff began as a quick hack. I will think about a better way to handle this; perhaps as you say with an overall compiler_arguments instead of just the few I cater for now.

[DavidGamba]

Awesome, thanks!

I forked your repo and right now just removed all args alltogether (I am ok with asciidoctor's defaults when writing a single file). I will see if I come up with something worth sharing.

Thanks again for a great plugin :-)