Add npm test script for server/ and lib/

package.json

@@ -26,5 +26,8 @@
   "devDependencies": {
     "mocha": "*",
     "expect.js": "*"
+  },
+  "scripts": {
+    "test": "./node_modules/mocha/bin/mocha -R spec server/test lib/test;"
   }
 }