Swipe ctas

This introduces and A/B test with two different variants of swipe call-to-actions.

# Hypothesis

Adding call-to-actions for swipe functionality will increase discoverability of the functionality and thus increase
 overall page views per session.

# Buckets

- Control: Swipe with no call-to-actions (33%)
- Variant A: Swipe with "ears" fixed to the left and right of the screen (33%)
- Variant B: Swipe with a "bar" fixed to the top of the screen including page count and progress (33%)

# Predictions

## Jim & Nick

- Users that use swipe functionality increase from 2 -> 4%.

## Patrick

- Average page views per session increase by 1 with variant A (ears).
- Average page views per session increase by 2 with variant B (bar).

# Screenshots
### Bar
![Bar](http://cl.ly/image/2S1y1f3D0A1e/Image%202013.08.13%2009%3A49%3A31.png)

### Ears
![Ears](http://cl.ly/image/050w1P3d3Y0Z/Image%202013.08.13%2009%3A49%3A56.png)