A simpler travis config

Most of the config work pushed to wct

.travis.yml

@@ -3,7 +3,7 @@ sudo: false
 matrix:
   include:
   - node_js: stable
-    script: xvfb-run -a wct --simpleOutput -l firefox -l chrome
+    script: xvfb-run wct
     addons:
       firefox: latest
       apt:
@@ -15,11 +15,10 @@ matrix:
     script:
     - |
       if [ "${TRAVIS_PULL_REQUEST}" = "false" ]; then
-        wct --simpleOutput -s 'Windows 10/microsoftedge' -s 'Windows 8.1/internet explorer@11' -s 'Windows 7/internet explorer@10' -s 'OS X 10.10/safari@8' -s 'OS X 10.9/safari@7'
+        wct -s 'default'
       fi
 before_script:
 - npm install bower
-- npm install web-component-tester
 - export PATH=$PWD/node_modules/.bin:$PATH
 - bower install
 env: