bbatsov/rubocop — pull request #281 by yujinakayama (2013-06-16 13:53:12+00:00)
Title: Don't display "Offences:" if there's no offence with progress formatter

```bash
$ ./bin/rubocop --format progress
Inspecting 195 files
................................................................................
................................................................................
...................................

Offences: # <- This one

195 files inspected, no offences detected
```