Added mkdir log

Author: Nils Langner

.travis.yml

@@ -9,6 +9,7 @@ before_script:
   - wget http://selenium.googlecode.com/files/selenium-server-standalone-2.35.0.jar
   - java -jar selenium-server-standalone-2.35.0.jar -port 4444 >/dev/null 2>&1 &
   - cd test/integration/
+  - mkdir tests/_log
 
 
 script: php codecept.phar run -d