Bug fix travis config

Author: neroniaky

.travis.yml

@@ -1,4 +1,9 @@
-language: node_js
-sudo: false
 node_js:
-  - 'stable'
+  - "4"
+  - "5"
+  - "node"
+before_install:
+  - export CHROME_BIN=chromium-browser
+  - export DISPLAY=:99.0
+  - sh -e /etc/init.d/xvfb start
+  - sleep 3