配置SSH key（报错fatal: Could not read from remote repository.Please make sure you have the correct ac）
由于之前一直在用的机器送去修，最近换了一台新机器，在使用git push -u origin master命令提交时报错Permission denied (publickey).fatal: Could not read from remote repository.Please make sure you have the correct access rightsand the repository exists.查过了才发现是没有配置ssh key。所以在重新配置ssh ..
