Added fix to avoid blurry labels

Current implementation works fine, but all labels are a bit blurry. You can see that in this screenshot

![before](https://cloud.githubusercontent.com/assets/66432/4164509/c8584282-34f5-11e4-99ac-45f122857295.png)

I created a simple fix to avoid blurry labels. Compare first screenshot with second and you will see the difference!

![after](https://cloud.githubusercontent.com/assets/66432/4164511/d25c93e6-34f5-11e4-985d-a772637bc854.png)

Thanks and keep up the good work!