Kenshi Kamata issues

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                                            Kenshi Kamata

now this plugin can use github.com only. need to use repos hosted other services. if #1 is finished, this will be easy task.

[mercari.go #20]( https://mercari.connpass.com/event/266215/ ) で発表した取り組みの修正です。 graceful shutdown も実装できたので PR にします