I want to add to podfile private git repository, for example:

```
pod 'MyLibrary', :git => 'git@github.com:perfect/top-library.git', :branch => 'data/myLab'

```

But when I run "pod install" command I receive error:

```
[!] Error installing MyLibrary
[!] Failed to download 'MyLibrary'.

```

And the question is how to provide my credentials from git to cocoapods ?