title: I am receiving could not find "htmlextra" reporter when i run it on my local (MAC OSX) neman html report generation
body: <p>I am receiving below message, when i run newman run command with parameter -r htmlextra. Where i have already installed htmlextra using -g (globally). But when i create a newman .js file i am able to execute. Please advice what might have went wrong.</p>
  
  <pre><code>newman: could not find "htmlextra" reporter
  ensure that the reporter is installed in the same directory as newman
  please install reporter using npm
  </code></pre>
  
  <p>Thanks in advance.</p>