refactor($http): change legacy promise to standard

`success` and `error` promise have been deprecated.

Author: Jinyoung Kim

Diff for: app/templates/client/app/main/main.controller(coffee).coffee

@@ -4,8 +4,8 @@ angular.module '<%= scriptAppName %>'
 .controller 'MainCtrl', ($scope, $http<% if (filters.socketio) { %>, socket<% } %>) ->
   $scope.awesomeThings = []
 
-  $http.get('/api/things').success (awesomeThings) ->
-    $scope.awesomeThings = awesomeThings
+  $http.get('/api/things').then (response) ->
+    $scope.awesomeThings = response.data
     <% if (filters.socketio) { %>socket.syncUpdates 'thing', $scope.awesomeThings<% } %>
 <% if (filters.models) { %>
   $scope.addThing = ->

Diff for: app/templates/client/app/main/main.controller(js).js

@@ -4,8 +4,8 @@ angular.module('<%= scriptAppName %>')
   .controller('MainCtrl', function($scope, $http<% if (filters.socketio) { %>, socket<% } %>) {
     $scope.awesomeThings = [];
 
-    $http.get('/api/things').success(function(awesomeThings) {
-      $scope.awesomeThings = awesomeThings;<% if (filters.socketio) { %>
+    $http.get('/api/things').then(function(response) {
+      $scope.awesomeThings = response.data;<% if (filters.socketio) { %>
       socket.syncUpdates('thing', $scope.awesomeThings);<% } %>
     });
 <% if (filters.models) { %>