fix sha for ember-cli-sass version

Author: mike-north

blueprints/ember-cli-materialize/index.js

@@ -15,7 +15,7 @@ module.exports = {
       this.addPackageToProject('ember-keyboard', '1.0.3'),
       this.addPackageToProject('ember-truth-helpers', '1.2.0'),
       this.addPackageToProject('ember-modal-dialog', '~0.8.0'),
-      this.addPackageToProject('ember-cli-sass', 'mike-north/ember-cli-sass#5e0c40ace35ef185e78f9ea921a5e3847958bc0c'),
+      this.addPackageToProject('ember-cli-sass', 'mike-north/ember-cli-sass#8ceb57d41f5774e8ececb5d1f05454449c19000c'),
       this.addPackageToProject('ember-material-design-icons-shim', '0.1.1'),
       this.addPackageToProject('ember-materialize-shim', '0.1.1')
     ]);