add current bower version to hologram docs

fixes #231 

![screen shot 2014-05-08 at 6 18 11 pm](https://cloud.githubusercontent.com/assets/231252/2922251/bce6507e-d6fe-11e3-944f-2e58b2d894fc.png)
![screen shot 2014-05-08 at 6 18 29 pm](https://cloud.githubusercontent.com/assets/231252/2922253/c0007f32-d6fe-11e3-9c60-8e1e65808095.png)
![screen shot 2014-05-08 at 6 19 16 pm](https://cloud.githubusercontent.com/assets/231252/2922257/d89c59ee-d6fe-11e3-835a-3d0801323395.png)