updated package.json.

package.json

@@ -5,7 +5,7 @@
   "main": "index.js",
   "scripts": {
     "test": "node_modules/.bin/mocha --reporter spec --timeout 1500000",
-    "cover": "nyc node_modules/istanbul/lib/cli.js cover node_modules/mocha/bin/_mocha -- -R spec test/* --timeout 1500000",
+    "cover": "node_modules/istanbul/lib/cli.js cover node_modules/mocha/bin/_mocha -- -R spec test/* --timeout 1500000",
     "coverage": "nyc npm run test"
   },
   "keywords": [