Tabs with sliders
Hello, I just found Ratchet today and I think it was awesome

However, In Android, when i have a lot of tabs that cannot be displayed all of them at once,the tabs wrapped into something that can be scrolled / swapped horizontally, with left and right navigation, and It seems Rachet didn't have this behavior...

It's look like similar like Browser Tab, notice there are Left and Right Navigation Button:
![moztabs](https://cloud.githubusercontent.com/assets/9136829/10721428/17e83924-7bd6-11e5-95a5-37c30b86eb5c.png)

More Likely (Without Navigation Button, but I prefer with Navigation Button):

![demotab](https://cloud.githubusercontent.com/assets/9136829/10721442/30e44d3c-7bd6-11e5-91cb-c35b00be92cc.png)

I hope this available in future version of Rachet!
Thanks in advance
