App Controller
#constructor
should set up handlers
#save
should save values with localStorage service
should display message to user when saving
#view
should retrieve values from localStorage service and display
should display message if error retrieving value
#clearValue
should clear the input value
local-storage.helper
should use local storage to save value with key
should stringify objects before saving them
should be able to retrieve value using key with #get
#get
should retrieve value from local storage using key
should return object if object stored
should throw error if requesting key with no value assigned
