[Bug 1869719] Review Request: rubygem-image_processing - High-level wrapper for processing images for the web with ImageMagick or libvips

https://bugzilla.redhat.com/show_bug.cgi?id=1869719

--- Comment #2 from Jaroslav Prokop  ---
Looks fine, I just have 2 nits:

There is some documentation in `doc` directory in the image_processing project
that I think should be included since it looks like it has more content than
the generated docs.
Maybe transform it into some kind of manpage or include it in the *-doc
subpackage?

And just a triviality:
This `%{gem_instdir}/image_processing.gemspec` could use a macro so it becomes
`%{gem_instdir}/%{gem_name}.gemspec`.