chore(package): update karma-webpack to version 2.0.8

Closes #219

Author: greenkeeper[bot]

package.json

@@ -39,7 +39,7 @@
     "karma-remap-coverage": "0.1.4",
     "karma-sauce-launcher": "1.2.0",
     "karma-sourcemap-loader": "0.3.7",
-    "karma-webpack": "2.0.6",
+    "karma-webpack": "2.0.8",
     "mocha": "4.0.1",
     "phantomjs-prebuilt": "2.1.16",
     "semver": "5.4.1",