chore(package): update karma to version 3.0.0

Closes #42

Author: greenkeeper[bot]

package.json

@@ -38,7 +38,7 @@
     "codelyzer": "^4.3.0",
     "jasmine-core": "^2.99.1",
     "jasmine-spec-reporter": "^4.2.1",
-    "karma": "^1.7.1",
+    "karma": "^3.0.0",
     "karma-chrome-launcher": "^2.2.0",
     "karma-cli": "^1.0.1",
     "karma-coverage-istanbul-reporter": "^1.4.3",