Permission denied (publickey).

```
$ npm install -g native-base-cli
/usr/local/bin/native-base -> /usr/local/lib/node_modules/native-base-cli/index.js
/usr/local/lib
└─┬ native-base-cli@1.0.0
└─┬ fs-extra@3.0.1
├── graceful-fs@4.1.11
├── jsonfile@3.0.1
└── universalify@0.1.1
```

```
$ native-base init
Cloning into 'native-base-boilerplate'...
Permission denied (publickey).
fatal: Could not read from remote repository.

Please make sure you have the correct access rights
and the repository exists.
```