Like button support

![img_5694](https://cloud.githubusercontent.com/assets/306691/3027069/c5e8167a-e01e-11e3-99ee-5362ccf8ab87.PNG)
![img_5695](https://cloud.githubusercontent.com/assets/306691/3027070/c5ec1bf8-e01e-11e3-9a76-4b3fde3beee6.PNG)