fixup! chore(travis): simplify and improve config

Author: gkalpak

.travis.yml

@@ -12,12 +12,12 @@ cache:
     - "$HOME/.npm"
 
 before_install:
-  - export DISPLAY=":99.0";
-  - sh -e /etc/init.d/xvfb start;
+  - export DISPLAY=":99.0"
+  - sh -e /etc/init.d/xvfb start
 
 install:
-  - npm install;
+  - npm install
 
 script:
-  - npm run test-single-run;
-  - (npm start > /dev/null &) && npm run protractor;
+  - npm run test-single-run
+  - (npm start > /dev/null &) && npm run protractor