docs(readme): add Greenkeeper badge

This commit is contained in:
greenkeeper[bot]
2017-07-03 21:18:31 +00:00
parent ab9eccf3a0
commit df65e88f80

3
README.md Normal file
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[![Greenkeeper badge](https://badges.greenkeeper.io/probot/probot.github.io.svg)](https://greenkeeper.io/)