title: Geb not working with chrome driver
body: <pre><code>@Grapes([
    @Grab("org.gebish:geb-core:0.9.0"),
    @Grab("org.gebish:geb-spock:0.9.0"),
    @Grab("org.seleniumhq.selenium:selenium-firefox-driver:2.33.0"),
    @Grab("org.seleniumhq.selenium:selenium-chrome-driver:2.33.0"),
    @Grab("org.seleniumhq.selenium:selenium-support:2.26.0"),
    @Grab( group='org.spockframework', 
      module='spock-core', 
      version='0.3'
    ),
    @Grab(group='org.gebish', module='geb-implicit-assertions', version='0.9.0')
  ])
  import geb.Browser
  import geb.spock.GebReportingSpec
  import org.openqa.selenium.chrome.*
  import spock.lang.Specification
  import geb.navigator.NonEmptyNavigator
  import geb.navigator.factory.*
  System.setProperty("webdriver.chrome.driver", "C:\\chromedriver\\chromedriver.exe");
  def browser = new Browser(driver: new ChromeDriver())    
  
  browser.go "http://www.google.com/"
  
  assert browser.title == "Google"
  
  browser.$("input", name: "q").value("query")   
  </code></pre>
  
  <p>When i try to run the above code i am getting the following error</p>
  
  <pre><code>WARNING: Sanitizing stacktrace:
  java.lang.NoClassDefFoundError: Could not initialize class geb.navigator.NonEmptyNavigator
      at java.lang.Class.forName0(Native Method)
      at java.lang.Class.forName(Class.java:171)
      at geb.navigator.factory.DefaultInnerNavigatorFactory.class$(DefaultInnerNavigatorFactory.groovy)
      at geb.navigator.factory.DefaultInnerNavigatorFactory.$get$$class$geb$navigator$NonEmptyNavigator(DefaultInnerNavigatorFactory.groovy)
      at geb.navigator.factory.DefaultInnerNavigatorFactory.createNavigator(DefaultInnerNavigatorFactory.groovy:40)
      at geb.navigator.factory.InnerNavigatorFactory$createNavigator.call(Unknown Source)
      at geb.navigator.factory.AbstractNavigatorFactory.createFromWebElements(AbstractNavigatorFactory.groovy:44)
      at geb.navigator.factory.NavigatorFactory$createFromWebElements.callCurrent(Unknown Source)
      at geb.navigator.factory.BrowserBackedNavigatorFactory.getBase(BrowserBackedNavigatorFactory.groovy:33)
      at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
      at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
      at java.lang.reflect.Method.invoke(Method.java:597)
      at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:90)
      at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:233)
      at groovy.lang.MetaClassImpl.getProperty(MetaClassImpl.java:1671)
      at groovy.lang.MetaClassImpl.getProperty(MetaClassImpl.java:3408)
      at geb.navigator.factory.AbstractNavigatorFactory.getProperty(AbstractNavigatorFactory.groovy)
      at org.codehaus.groovy.runtime.callsite.PogoGetPropertySite.getProperty(PogoGetPropertySite.java:47)
      at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callGetProperty(AbstractCallSite.java:227)
      at geb.content.NavigableSupport.getNavigator(NavigableSupport.groovy:39)
      at geb.content.NavigableSupport.$(NavigableSupport.groovy:96)
      at geb.content.NavigableSupport$$.call(Unknown Source)
      at geb.Page.$(Page.groovy)
      at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
      at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
      at java.lang.reflect.Method.invoke(Method.java:597)
      at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:90)
      at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:233)
      at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1085)
      at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:909)
      at org.codehaus.groovy.runtime.InvokerHelper.invokePogoMethod(InvokerHelper.java:848)
      at org.codehaus.groovy.runtime.InvokerHelper.invokeMethod(InvokerHelper.java:831)
      at org.codehaus.groovy.runtime.ScriptBytecodeAdapter.invokeMethodN(ScriptBytecodeAdapter.java:164)
      at geb.Browser.methodMissing(Browser.groovy:193)
      at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
      at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
      at java.lang.reflect.Method.invoke(Method.java:597)
      at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:90)
      at groovy.lang.MetaClassImpl.invokeMissingMethod(MetaClassImpl.java:837)  
  </code></pre>
  
  <p>Any idea on this how to resolve it ???</p>