fix(test): create polyfills-test.ts for karma test & setup Travis CI

package.json

@@ -30,9 +30,7 @@
     "electron:windows": "npm run build:prod && npx electron-builder build --windows",
     "electron:mac": "npm run build:prod && npx electron-builder build --mac",
     "test": "ng test",
-    "pree2e:build": "webdriver-manager update --gecko false && npm run ng serve",
-    "pree2e:protractor": "wait-on http-get://localhost:4200/ && protractor ./protractor.conf.js",
-    "e2e": "npm-run-all -p -r pree2e:build pree2e:protractor"
+    "e2e": "ng e2e"
   },
   "dependencies": {},
   "devDependencies": {
@@ -52,7 +50,7 @@
     "@ngx-translate/http-loader": "3.0.1",
     "@types/jasmine": "2.8.7",
     "@types/jasminewd2": "2.0.3",
-    "@types/node": "8.0.58",
+    "@types/node": "~8.9.4",
     "codelyzer": "4.2.1",
     "core-js": "2.5.6",
     "cross-env": "5.1.5",
@@ -68,7 +66,7 @@
     "karma-coverage-istanbul-reporter": "2.0.0",
     "karma-jasmine": "1.1.2",
     "karma-jasmine-html-reporter": "1.1.0",
-    "npm-run-all": "4.1.3",
+    "npm-run-all": "^4.1.3",
     "npx": "10.2.0",
     "protractor": "5.3.2",
     "replace": "0.3.0",