title: virtualenv to path on Windows 10
body: <p>I have installed virtualenv (if I type "pip list" there is virtualenv (15.1.0)) and when I try to use it throws an error: </p>
  
  <blockquote>
    <p>virtualenv : The term 'virtualenv' is not recognized as the name of a cmdlet, function, script file, or operable
    program. Check the spelling of the name, or if a path was included, verify that the path is correct and try again  </p>
    
    <p>At line:1 char:1  </p>
  
  <pre><code>+ virtualenv  
  + ~~~~~~~~~~  
     + CategoryInfo          : ObjectNotFound: (virtualenv:String) [], CommandNotFoundException
     + FullyQualifiedErrorId : CommandNotFoundException
  </code></pre>
  </blockquote>
  
  <p>I think I need to add virtualenv to path, which I've tried without success.</p>