trying a different way to add chromium to travis-ci

Author: borysn

.travis.yml

@@ -1,8 +1,9 @@
 language: java
 
 before_install:
-  - sudo apt-get -qq update
-  - sudo apt-get install -y chromium
+  - export CHROME_BIN=chromium-browser
+  - export DISPLAY=:99.0
+  - sh -e /etc/init.d/xvfb start
 
 jdk:
   - oraclejdk8