Merge pull request #39 from opensheetmusicdisplay/greenkeeper-mocha-3.0.1

Update mocha to version 3.0.1

package.json

@@ -52,7 +52,7 @@
     "karma-mocha-reporter": "^2.0.4",
     "karma-phantomjs-launcher": "^1.0.1",
     "karma-xml2js-preprocessor": "^0.0.3",
-    "mocha": "^2.5.3",
+    "mocha": "^3.0.1",
     "phantomjs-prebuilt": "^2.1.7",
     "tsify": "^1.0.0",
     "tslint": "3.8.0",