BCE0020: An instance of type 'UnityEngine.WWW' is required to access non static member 'text'.

I am trying to get a line of text from a web page and match it with a line in a .txt file in the game here is the code I have so far
import System.IO;
var fileName = “version.txt”;

var url = "https://googledrive.com/host/0By0eZ3sqrGD2b1FCSDZBamNTZlU/";

 
function Start () 
{

	//read txt file -------------------------------------------------------
    var sr = new StreamReader(Application.dataPath + "/" + fileName);
    var fileContents = sr.ReadToEnd();
    sr.Close();
 
    var lines = fileContents.Split("

"[0]);
for (line in lines)
{
print (line);
}
//----------------------------------------------------------------------

	// read web page---------------------------------------------------------
		 // Start a download of the given URL
		var www : WWW = new WWW (url);
		// Wait for download to complete
		yield www;
		
		var version = WWW.text;
		Debug.Log(version);
	//--------------------------------------------------------------------------	

}

this code gives me the error BCE0020: An instance of type ‘UnityEngine.WWW’ is required to access non static member ‘text’.

on the line “var version = WWW.text;
am I using WWW.text right? there wasent any example code in the manual

Use lowercase ‘www’, you are currently trying to access the (caps) WWW class