fix RuboCop lint warnings

Don't mind me... just having a little OCD moment.

![shaking](http://media.giphy.com/media/zMaDW3QwlQ2bu/giphy.gif)

```bash
$ rubocop -R -l
```

https://github.com/bbatsov/rubocop
Since our user interviews are so focused on the happy path, I haven't run through the reject path for a while. I've added a story to run through reject path and to log any related stories or issues. 
https://www.pivotaltracker.com/story/show/82298968