removed useless node versions from travis

Artem Artemyev · Artem Artemyev · commit 5f725c97bee2 · 2016-01-02T18:38:56.000+05:00
diff --git a/.travis.yml b/.travis.yml
@@ -8,7 +8,5 @@ install:
 
 node_js:
   - "5.3"
-  - "4.2"
-  - "0.12"
 
 script: npm run test_browser
