[useless]
http://blog.csdn.net/huahua78/article/details/52330792
使用git push origin master是出现如下问题；
Username for ‘https://github.com‘:
解决办法：
git remote set-url origin git+ssh://git@github.com/username/reponame.git
ssh key错误修改：
ssh: Could not resolve hostname github.com:adumans: Name or service not known
fatal: Could not read from remote repository.
Please make sure you have the correct access rights
and the repository exists.
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