kro12/handles_sortable_columns — pull request #1 by jordanandree (2014-09-09 16:49:31+00:00)
Title: Additional parameters default

Started using your branch since i need to add additional parameters. Added a defualt empty hash since I would get this error when not using the `:additional_params` key:

**lib/handles/sortable_columns.rb:176**

```
undefined method `to_hash' for nil:NilClass`
```