Merge pull request SeleniumHQ#100 from sethuster/sethuster-chromedriver-1

upgrade chromedriver 2.19

Author: rubytester

NodeChrome/Dockerfile

@@ -17,7 +17,7 @@ RUN wget -q -O - https://dl-ssl.google.com/linux/linux_signing_key.pub | apt-key
 #==================
 # Chrome webdriver
 #==================
-ENV CHROME_DRIVER_VERSION 2.18
+ENV CHROME_DRIVER_VERSION 2.19
 RUN wget --no-verbose -O /tmp/chromedriver_linux64.zip http://chromedriver.storage.googleapis.com/$CHROME_DRIVER_VERSION/chromedriver_linux64.zip \
   && rm -rf /opt/selenium/chromedriver \
   && unzip /tmp/chromedriver_linux64.zip -d /opt/selenium \