added phone numbers, locations and search capability

new application controller to catch search action and
  transition to search controller

new search controller to generate search results

added missingLocation and missingPhone computed properties
  to checker controller

changed vCard generator in show controller to use Ember.isEmpty
  and to put telephone numbers and address in vCard if present

new phone-number and show-location helpers to assist in the
  display of phone numbers and location

added ENABLE_ALL_FEATURES to index.html

added street, city, stateProv, country, postalCode, phoneNumber
  and backupPhoneNumber to superhero model; added phone numbers
  and random Springfields around the US to fixtures

added new search route to router

added search box to header

new search template for showing search results

added missingLocation and missingPhone results to checker template

updated to Ember 1.6.0-beta2 (canary) in order to be able to
  use query-params-new feature

changed checker and show controllers to use isEmpty alias for Ember.isEmpty

updated show-location helper to take a hero as an argument - now reusable in
  more situations and properly updates on changes

removed unnecessary ENV definition in index.html - this is already in
  config/environment.js

updated _show_top_row to pass this to the location helper