add ghooks dev dependency

related to #636

package.json

@@ -32,10 +32,12 @@
   "devDependencies": {
     "async": "^1.4.0",
     "azure-storage": "^0.3.1",
+    "clean-css": "3.4.6",
     "clone": "^1.0.2",
     "debounce": "^1.0.0",
     "event-stream": "^3.1.7",
     "express": "^4.13.1",
+    "ghooks": "^1.0.1",
     "glob": "^5.0.13",
     "gulp": "^3.8.9",
     "gulp-atom-electron": "^0.17.2",
@@ -46,15 +48,14 @@
     "gulp-insert": "^0.5.0",
     "gulp-json-editor": "^2.2.1",
     "gulp-minify-css": "^1.2.1",
-		"clean-css": "3.4.6",
     "gulp-mocha": "^2.1.3",
     "gulp-remote-src": "^0.4.0",
     "gulp-rename": "^1.2.0",
     "gulp-sourcemaps": "^1.6.0",
+    "gulp-symdest": "^1.0.0",
     "gulp-tsb": "^1.7.3",
     "gulp-uglify": "^1.4.1",
     "gulp-util": "^3.0.6",
-		"gulp-symdest": "^1.0.0",
     "gulp-vinyl-zip": "^1.1.0",
     "gulp-watch": "^4.2.4",
     "innosetup-compiler": "^5.5.60",
@@ -82,5 +83,10 @@
   },
   "bugs": {
     "url": "https://github.com/Microsoft/vscode/issues"
+  },
+  "config": {
+    "ghooks": {
+      "pre-commit": "node build/gulpfile.hygiene.js"
+    }
   }
 }