mojombo/grit — pull request #178 by derricks (2013-11-21 01:35:13+00:00)
Title: Allow Grit::Repo to be initialized with a directory that is below the project root.

This is an issue we ran into when trying to capture the commit sha for a directory when not at the project root. We have scripts that run from within subdirectories.

Something like this:
```
project_directory
- .git
- client
- server
- deployment scripts
```
We need to run deployment scripts from within the directory of that name.

test_repo didn't fully pass tests, but it looks like that's because it expects to be on a branch named master, which I wasn't. My new test did pass, however.