berkshelf/berkshelf — pull request #1321 by ymattw (2014-10-22 00:16:31+00:00)
Title: Add an option 'keep_history: true' to keep the .git folder in installed cookbook path

Example cookbook line in Berksfile would be like this:

```
cookbook 'yinst', git: 'git@example.com:org/repo.git', keep_history: true
```