ci(travis): added target platforms & more

TimeRaider · TimeRaider · commit c9309d8bd507 · 2016-11-02T23:23:14.000+05:00
diff --git a/.travis.yml b/.travis.yml
@@ -1,5 +1,11 @@
 language: node_js
 node_js:
-  - "4"
-  - "5"
   - "6"
+  - "5"
+  - "4"
+cache:
+  directories:
+    - node_modules
+branches:
+  only:
+    - master
