Import sjcl by newly added Anonymous AMD Support

Fixes: `invalid aes key size` error in sjcl 1.0.5 and 1.0.6.

https://github.com/ember-cli/ember-cli/pull/5976

app/services/encryption.js

@@ -1,6 +1,6 @@
 import Ember from 'ember';
 import generatePassphrase from '../utils/generate-passphrase';
-/* global sjcl */
+import sjcl from 'sjcl';
 
 export default Ember.Service.extend({
   key: null,

bower.json

@@ -3,7 +3,7 @@
   "dependencies": {
     "ember": "~2.8.0",
     "ember-cli-shims": "0.1.3",
-    "sjcl": "~1.0.0",
+    "sjcl": "~1.0.6",
     "bootstrap": "~3.3.5",
     "bootstrap-datepicker": "~1.4.0",
     "floatThead": "^1.4.3",

ember-cli-build.js

@@ -43,7 +43,11 @@ module.exports = function() {
     production: 'bower_components/floatThead/dist/jquery.floatThead.min.js'
   });
 
-  app.import('bower_components/sjcl/sjcl.js');
+  app.import('bower_components/sjcl/sjcl.js', {
+    using: [
+      { transformation: 'amd', as: 'sjcl' }
+    ]
+  });
 
   app.import('bower_components/jstimezonedetect/jstz.js');
 

tests/helpers/server-get-polls.js

@@ -1,5 +1,5 @@
 import Ember from 'ember';
-/* global sjcl */
+import sjcl from 'sjcl';
 
 export default function(attr, key) {
   const defaultAttr = {