How to build a jruby jar with sass libs

howto.md

Download jruby complete:

curl -O http://jruby.org.s3.amazonaws.com/downloads/1.7.13/jruby-complete-1.7.13.jar

Now rename it:

mv jruby-complete-1.7.13.jar scss.jar

Next install gems:

java -jar scss.jar -S gem install -i gems sass --no-document --no-format-executable
java -jar scss.jar -S gem install -i gems bourbon --no-document --no-format-executable
java -jar scss.jar -S gem install -i gems neat --no-document --no-format-executable

Finally bundle it:

jar uf scss.jar -C gems .

The new jar File can now be used like this:

java -jar scss.jar -S scss styles.scss

This worked fine for me. I substituted in JRuby 9.1.12.0, and didn't have any issues