Horb

Thanks. I wanted the most minimal diff possible so the meaning wasn't lost in the changes. Now that the meaning has gotten across I'll make a new changeset that is...

Refactor to introduce instance variables is complete. I need to test to make sure I haven't broken anything. Once I've tested I'll report back here.

@paulcbetts I think this is good to go now. Some variable names are no longer used and the name from command line parsing is used instead such as; signingOpts/signingParameters, package/target.