Run tests using node on Travis

.travis.yml

@@ -1,5 +1,6 @@
-rvm:
-  - 1.9.2
-before_script:
-  - sudo apt-get -y install xulrunner-2.0
-  - gem install rspec
+language: node_js
+node_js:
+  - 0.4
+  - 0.6
+  - 0.7
+

package.json

@@ -8,5 +8,8 @@
   "devDependencies": {
     "vows": "0.6.x",
     "uglify-js": "1.3.0"
+  },
+  "scripts": {
+    "test": "vows --spec"
   }
 }