use cpr over ncp

package.json

@@ -88,6 +88,7 @@
     "concat-stream": "^1.4.7",
     "configstore": "0.3.2",
     "core-object": "0.0.2",
+    "cpr": "^0.4.1",
     "debug": "^2.1.3",
     "diff": "^1.3.1",
     "ember-cli-copy-dereference": "^1.0.0",
@@ -139,7 +140,6 @@
     "chai-as-promised": "^4.3.0",
     "codeclimate-test-reporter": "0.0.4",
     "coveralls": "^2.11.2",
-    "ember-cli-ncp": "1.0.2",
     "istanbul": "^0.3.13",
     "mocha": "^2.2.1",
     "mocha-jshint": "1.0.0",

tests/helpers/acceptance.js

@@ -7,7 +7,7 @@ var runCommand        = require('./run-command');
 var Promise           = require('../../lib/ext/promise');
 var tmp               = require('./tmp');
 var conf              = require('./conf');
-var copy              = Promise.denodeify(require('ember-cli-ncp'));
+var copy              = Promise.denodeify(require('cpr'));
 var root              = process.cwd();
 
 var onOutput = {

tests/helpers/copy-fixture-files.js

@@ -2,12 +2,12 @@
 
 var path    = require('path');
 var Promise = require('../../lib/ext/promise');
-var ncp     = Promise.denodeify(require('ember-cli-ncp'));
+var copy    = Promise.denodeify(require('cpr'));
 
 var rootPath = process.cwd();
 
 module.exports = function copyFixtureFiles(sourceDir) {
-  return ncp(path.join(rootPath, 'tests', 'fixtures', sourceDir), '.', {
+  return copy(path.join(rootPath, 'tests', 'fixtures', sourceDir), '.', {
     clobber: true,
     stopOnErr: true
   });