add code coverage

Author: SpaceK33z

.gitignore

@@ -1 +1,2 @@
-node_modules
+/node_modules
+/coverage

package.json

@@ -15,6 +15,7 @@
     "eslint": "^3.4.0",
     "express": "^4.14.0",
     "file-loader": "^0.9.0",
+    "istanbul": "^0.4.5",
     "mocha": "^3.0.2",
     "mocha-sinon": "^1.1.6",
     "should": "^11.1.0",
@@ -41,6 +42,7 @@
     "pretest": "npm run -s lint",
     "test": "mocha --full-trace --check-leaks",
     "beautify": "npm run lint -- --fix",
-    "travis": "npm test && node middleware.js"
+    "cover": "istanbul cover node_modules/mocha/bin/_mocha",
+    "travis": "npm run cover && npm run -s lint"
   }
 }