improved gulpfile

package.json

@@ -4,8 +4,13 @@
   "description": "A framework for real-time p2p shared editing on arbitrary complex data types",
   "main": "y.js",
   "scripts": {
-    "test": "gulp test"
+    "test": "gulp test",
+    "lint": "gulp lint"
   },
+  "pre-commit": [
+    "lint",
+    "test"
+  ],
   "repository": {
     "type": "git",
     "url": "https://github.com/y-js/yjs.git"
@@ -34,8 +39,11 @@
     "gulp-concat": "^2.5.2",
     "gulp-eslint": "^0.13.2",
     "gulp-jasmine": "^2.0.1",
+    "gulp-jasmine-browser": "^0.1.3",
     "gulp-sourcemaps": "^1.5.2",
     "gulp-uglify": "^1.2.0",
-    "minimist": "^1.1.1"
+    "gulp-watch": "^4.2.4",
+    "minimist": "^1.1.1",
+    "precommit-hook": "^2.0.1"
   }
 }