4.0.0 no_group_id_given gemspec_spec 0.0.0 gemspec_spec 3.0.0-SNAPSHOT 2.0.0-SNAPSHOT org.slf4j slf4j-simple 1.6.4 org.jruby jruby 1.7.16 pom org.jruby jruby 1.7.16 noasm org.jruby jruby-stdlib org.jruby.maven gem-maven-plugin ${jruby.plugins.version} jars_and_poms.gemspec