Feature/retrying yaml team boogaloo

This is another try at making a YAML-based retrieval system for team information. Once again, this should make it easier to add/remove/modify team member information. 

For more information, see the initial (unsuccessful) pull request: https://github.com/stitchfix/stitchfix.github.io/pull/37

The difference here is that I made some changes to fix some code that seemed to mess up the automatic deployment, whilst simultaneously altering files in the _site folder (the "production" or deployment files) that shouldn't have been touched.

Anyway, this should work.