require_java7
install_package "jruby-9.1.7.0" "https://s3.amazonaws.com/jruby.org/downloads/9.1.7.0/jruby-bin-9.1.7.0.tar.gz#95ac7d2316fb7698039267265716dd2159fa5b49f0e0dc6e469c80ad59072926" jruby