Enable 'node_modules' caching on TravisCI

AlexKVal · AlexKVal · commit 5885ce08c223 · 2015-08-25T00:44:42.000+03:00
diff --git a/.travis.yml b/.travis.yml
@@ -2,6 +2,9 @@ sudo: false
 language: node_js
 node_js:
   - "iojs"
+cache:
+  directories:
+    - node_modules
 notifications:
   webhooks:
     urls:
