added test pre-commit hook

Author: Morten Christensen

package.json

@@ -44,6 +44,7 @@
     "@types/mocha": "2.2.32",
     "@types/node": "^6.0.46",
     "chai": "3.5.0",
+    "ghooks": "^1.3.2",
     "mocha": "3.1.2",
     "nodemon": "1.11.0",
     "npm-run-all": "3.1.1",
@@ -55,5 +56,10 @@
   "engines": {
     "node": ">=6.0.0",
     "npm": "~3.0.0"
+  },
+  "config": {
+    "ghooks": {
+      "pre-commit": "npm run test"
+    }
   }
 }