[Nitro] Og test cases and specs

[George Moschovitis]

> Note that there's a file now in the root of og called 'spec-helper.rb'
> that includes the functionality of CONFIG.rb plus some extras, like a
> single method to use in setup to manage the test classes and return a
> store.  Take a look at it, there's not much there, but I'm pleased
> with it.

I would prefer spec-helper.rb to be renamed to helper.rb and moved inside spec/

-g.

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