title: Unable to change value for hAxis.showTextEvery in googleVis
body: <p>I'm trying to use the googleVis package to produce a "column" chart in R. 
  I have way way too many values on the horizontal axis ( the X axis ) so I want to "hide" the text (I mean all of it!) </p>
  
  <p>The only solution that I can see right now is to set the <strong>hAxis.showTextEvery</strong> to a very high number. However , this does not seem to work...</p>
  
  <pre><code>library(googleVis)
      my.data.frame &lt;- data.frame( SampleName = c(seq(1:2500)), Value = c(seq(1:2500)) ) 
      my.data.frame$Value &lt;- my.data.frame$Value / 100
      g3 &lt;- gvisColumnChart(my.data.frame, xvar = "SampleName", yvar = "Value" , options=list(hAxis.showTextEvery = 77777 ))
  plot(g3) # something is broken here!! 
  </code></pre>
  
  <p>See : <a href="http://i46.tinypic.com/2wnwwo2.png" rel="nofollow">http://i46.tinypic.com/2wnwwo2.png</a></p>
  
  <p>To summarize, I wish to remove all text on the X-axis. The second issue I see is that I only get the values between 1 and ~177... why is that? </p>