Merge pull request #292 from CoderDojo/chore/dep-updates

Upgrade karma coverage

Author: ArayB

package.json

@@ -90,7 +90,7 @@
     "json-server": "^0.10.1",
     "karma": "^4.1.0",
     "karma-chrome-launcher": "^2.1.1",
-    "karma-coverage": "^1.1.2",
+    "karma-coverage": "^2.0.1",
     "karma-mocha": "^1.3.0",
     "karma-phantomjs-launcher": "^1.0.2",
     "karma-phantomjs-shim": "^1.4.0",