add jruby build

dist/jruby.rake

@@ -0,0 +1,14 @@
+file pkg("foreman-#{version}-jruby.gem") => distribution_files do |t|
+  sh "env JRUBY=true gem build foreman.gemspec"
+  sh "mv foreman-#{version}.gem #{t.name}"
+end
+
+task "jruby:build" => pkg("foreman-#{version}-jruby.gem")
+
+task "jruby:clean" do
+  clean pkg("foreman-#{version}-jruby.gem")
+end
+
+task "jruby:release" => "jruby:build" do |t|
+  sh "parka push -f #{pkg("foreman-#{version}-jruby.gem")}"
+end

foreman.gemspec

@@ -18,4 +18,9 @@ Gem::Specification.new do |gem|
 
   gem.add_dependency 'term-ansicolor', '~> 1.0.7'
   gem.add_dependency 'thor',           '>= 0.13.6'
+
+  if RUBY_PLATFORM == "java" || ENV["JRUBY"]
+    gem.add_dependency "spoon", "~> 0.0.1"
+    gem.platform = Gem::Platform.new("java")
+  end
 end