Changes

* During [http://zenit/wiki/index.php/Firefox_Performance_Testing_:_A_Python_framework_for_Windows_Documentation#Configure_the_environment configuring the environment] I would describe (or take a screenshot) of what the folder structure should look like after you download and extract Win32PerfTesting_v4.zip. I personally prefer visuals (lol) rather than step by step explanations. For this specific case, I would say you need to download this file and extract it in this way -> (show screenshot) or:  c:\mozilla c:\mozilla\testing\...