Spin plugin version number and use random seed idea instead of saving to...

I've updated the plugin to allow an idea similar to what Rspec in the Ruby world allows, and that is, to feed a seed value into the randomizer to get the same order back out. 

https://www.relishapp.com/rspec/rspec-core/v/2-14/docs/command-line/order-new-in-rspec-core-2-8