Issue #2930044: Varbase 8.4.13: Updated [CHANGELOG.md, UPDATE.md] files and...

Issue #2930044: Varbase 8.4.13: Updated [CHANGELOG.md, UPDATE.md] files and filtered the code for Drupal 8 Coding Standard

.travis.yml

@@ -84,7 +84,7 @@ before_install:
   # Configure and run the virtual display.
   - export DISPLAY=:0
   - sh -e /etc/init.d/xvfb start
-  - Xvfb -- :99 -ac -screen 0 1366x768x24 &>/dev/null &
+  - sh -e /etc/init.d/xvfb :0 -ac -screen 0 1366x768x24 &>/dev/null &
   - sleep 3
 
   # Download Chrome Driver.