plug docblock and test
Merge pull request #291 from cordoval/291-i-think-we-can-remove-pullrequestmilestonelistcommandtest

merge #291 i think we can remove PullRequestMilestoneListCommandTest ? (cordoval)

This PR was merged into gushphp:master branch.

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Commits
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b7ed1908471d717930098f5b364425810d345932 plug docblock and test (cordoval)