A travis configuration that I reckon will work (including xvfb)

DamonOehlman · DamonOehlman · commit 9246dacf40e1 · 2015-04-02T20:09:23.000+11:00
diff --git a/.travis.yml b/.travis.yml
@@ -0,0 +1,10 @@
+sudo: false
+language: node_js
+node_js:
+  - 0.10
+  - 0.12
+  - iojs
+
+before_script:
+  - export DISPLAY=:99.0
+  - sh -e /etc/init.d/xvfb start
