Fix Whitespace
Checkins#new: Extract distance calculation to DistanceCalculator

This logic is complicated and powerful and should
not live in a controller
Refactor of CheckinsController

Simplify interface
debugged steven refactor of controller, need to add error if no ingredient discovered
Merge pull request #70 from pocket-gophers-2014/steven-review-refactor-demo

Steven review refactor demo
Merge branch 'master' of https://github.com/pocket-gophers-2014/zombify