Add an OptionHelper class with useful methods for working with options #31
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This PR adds a class for working with Options called OptionHelper.
Just opening a PR to gather thoughts/discussions on this in case there's anything else I should add here.
Currently, it adds an optX method to every returnable getAsX that allows you to provide a default value, beridding the rancid "Option may be null" warning that haunts me all the time...
Also adds a dead simple hasOption method to see if that option has been provided.