adds some styling for jquery ui autocomplete, fixes #48

Before:

![screen shot 2014-12-08 at 23 26 34](https://cloud.githubusercontent.com/assets/1086961/5348670/d250bd56-7f31-11e4-8819-d386bb67d1b3.png)

After:

![screen shot 2014-12-08 at 23 26 17](https://cloud.githubusercontent.com/assets/1086961/5348675/e016e03c-7f31-11e4-9b92-a9f28d79c822.png)