Add breadcrumbs

This PR is based off #196 and requires that one to be merged first.

FeedEx breadcrumb:

![image](https://cloud.githubusercontent.com/assets/23801/3811013/263696b2-1c99-11e4-88af-d3e2f7c4b805.png)

Support request breadcrumb example:

![image](https://cloud.githubusercontent.com/assets/23801/3811015/37466f40-1c99-11e4-9742-2f7631bdc8f3.png)