(feat) Add distance from user to each coffee location

shows distance for each business

known bug with recommendation bar—on initial load, data does not display on html element:
![screen shot 2014-09-08 at 10 53 55 am](https://cloud.githubusercontent.com/assets/6556190/4189978/51d0e70c-3781-11e4-9ecd-dbb12529cc5b.png)
After user centers, data displays: 
![screen shot 2014-09-08 at 10 54 03 am](https://cloud.githubusercontent.com/assets/6556190/4189996/750bf73e-3781-11e4-8439-b3e9e6ef87a6.png)