chillu/github-dashing — pull request #20 by markrickert (2014-07-30 19:45:39+00:00)
Title: Fixes error when a repos has zero commits.

```
scheduler caught exception:
undefined method `each' for "":String
lib/github_backend.rb:31:in `block in contributor_stats_by_author'
lib/github_backend.rb:23:in `each'
...
```