title: Installing Blackfire prob issue
body: <p>Having some issue trying to get Blackfire.io set up on my homestead box.</p>
  
  <p>Followed the installation guide a couple of times now, and no having no errors.</p>
  
  <p>When I try to use the chrome companion I get the follow error ...</p>
  
  <blockquote>
    <p>Are you authorized to profile this page? Probe not found, invalid signature</p>
  </blockquote>
  
  <p>Also when I try to check out what version of the prob I am using via <strong>php --ri blackfire</strong> I get the follow message despite installing it as per the guide</p>
  
  <blockquote>
    <p>Extension 'blackfire' not present.</p>
  </blockquote>
  
  <p>Any ideas!?</p>
  
  <p>Many thanks!</p>