MarkUsProject/Markus — pull request #1683 by zhangsu (2014-08-18 14:26:34+00:00)
Title: Update Rubocop version to fix warning

The current locked version of Rubocop doesn't recognize the `Style/`
prefix for the config keys and generates the following warning:
```
Warning: unrecognized cop Style/CollectionMethods found in
/home/su/code/Markus/.rubocop.yml
```

Hence the update.