Allow additional arguments to be passed to the control process spawned by jHiccup. Motivation is to allow the control process to be run on the Zing VM in a licensed environment without a license file present in the default /etc/zing/license location, by passing -XX:ZingLicenseFile=/actual/path/to/license. If there is a better way to do this please let me know.
Merge pull request #12 from benhyland/master

Allow JVM arguments to be passed to control process JVM