Merge pull request nteract#1024 from lgeiger/fix-coverage

chore(coverage): Fix coverage

Author: rgbkrk

package.json

@@ -24,7 +24,7 @@
     "test:functional:launchNewNotebook": "npm run sublaunch -- test/main/launchNewNotebook.js",
     "test:functional": "npm run test:functional:launch && npm run test:functional:launchNewNotebook",
     "test:coverage": "npm run coverage",
-    "test:unit": "cross-env NODE_PATH=app/node_modules/ mocha -r test/setup.js --compilers js:babel-core/register test/renderer/**/*.js",
+    "test:unit": "cross-env NODE_PATH=app/node_modules/ mocha -r test/setup.js --compilers js:babel-core/register \"test/renderer/**/*.js\"",
     "test:unit:individual": "cross-env NODE_PATH=app/node_modules/ mocha -r test/setup.js --compilers js:babel-core/register ",
     "test:watch": "watch 'npm run test' test/",
     "test:lint": "npm run lint",