Use chrome stable for tests

Author: Andries Smit

.travis.yml

@@ -4,11 +4,7 @@ language: node_js
 node_js:
 - "8"
 addons:
-  apt:
-    sources:
-    - google-chrome
-    packages:
-    - google-chrome-stable
+  chrome: stable
 before_install:
 - npm i -g npm
 - npm install grunt-cli -g

package.json

@@ -62,7 +62,7 @@
     "css-loader": "^3.4.2",
     "enzyme": "^3.11.0",
     "enzyme-adapter-react-16": "^1.15.2",
-    "extract-text-webpack-plugin": "^4.0.0-beta.0",,
+    "extract-text-webpack-plugin": "^4.0.0-beta.0",
     "fork-ts-checker-webpack-plugin": "^4.0.3",
     "grunt": "^1.0.4",
     "grunt-check-dependencies": "^1.0.0",