{"push_id":749592259,"size":1,"distinct_size":1,"ref":"refs/heads/master","head":"6716336079458f62b509a8ff59ffe311c25df57a","before":"5acd04c97806a94894edb19acc82da807e40305f","commits":[{"sha":"6716336079458f62b509a8ff59ffe311c25df57a","author":{"email":"bdfdc72f5c7796a26fdc28d3eb5f14f8a9aa51ce@gmail.com","name":"Sam Wang"},"message":"Update HelloWorld.md","distinct":true,"url":"https://api.github.com/repos/bookcaseballpen/datasciencecoursera/commits/6716336079458f62b509a8ff59ffe311c25df57a"}]}