travis.sh in watir-webdriver-0.6.7

- old
+ new

@@ -2,10 +2,10 @@
 
 set -e
 set -x
 
 export CHROME_REVISION=228611
-export CHROMEDRIVER_VERSION=2.4
+export CHROMEDRIVER_VERSION=2.9
 
 sh -e /etc/init.d/xvfb start
 git submodule update --init
 
 if [[ "$WATIR_WEBDRIVER_BROWSER" = "chrome" ]]; then