add dependency in package.json in order to build in node 4 (#1347)

ng2-components/ng2-alfresco-datatable/package.json

@@ -66,6 +66,7 @@
   "devDependencies": {
     "@types/jasmine": "^2.2.33",
     "@types/node": "^6.0.42",
+    "autoprefixer": "^6.5.4",
     "concurrently": "^2.2.0",
     "cpx": "1.3.1",
     "cssnano": "^3.8.1",
@@ -84,6 +85,7 @@
     "gulp-template": "^4.0.0",
     "gulp-typescript": "^3.1.3",
     "gulp-uglify": "^2.0.0",
+    "gulp-util": "^3.0.7",
     "intl": "^1.2.5",
     "jasmine-core": "2.4.1",
     "karma": "0.13.22",
@@ -94,6 +96,7 @@
     "karma-jasmine-html-reporter": "0.2.0",
     "karma-mocha-reporter": "2.0.3",
     "license-check": "1.1.5",
+    "merge-stream": "^1.0.1",
     "remap-istanbul": "0.6.3",
     "rimraf": "2.5.2",
     "run-sequence": "^1.2.2",