Permission denied (publickey).

git clone [email protected]:googlesamples/android-architecture.git
从github克隆仓库时出错：
Permission denied (publickey).
fatal: Could not read from remote repository.
Please make sure you have the correct access rights
and the repository exists.
是由于github账号没有设置ssh公钥信息所致。
参考：
https://help.github.com/articles/connecting-to-github-with-ssh/
https://www.zhihu.com/question/21402411