add the word "game" to description

This change prevents an awkward garden-path reading that makes it look like there's no noun, or that DIVE is a theory. It is not. It is a fact. @alexfink
Merge pull request #2 from VynceMontgomery/text-clarity

add the word "game" to description
Merge pull request #2 from alexfink/master

up-to-date following alexfink