Enable Travis dependency caching

See http://docs.travis-ci.com/user/caching/ for more information

Author: Marcel Gerber

.travis.yml

@@ -2,6 +2,9 @@ language: node_js
 sudo: false # use container-based Travis infrastructure
 node_js:
   - "0.10"
+cache:
+  directories:
+    - node_modules
 before_script:
   - npm install -g grunt-cli
   - npm install -g jasmine-node