title: -bash: ngrok: command not found
body: <p>I'm trying to integrate the Twilio API into my Rails app. The tutorial I found suggested using ngrok to put my app on the internet (rather than working on localhost). I've installed and upnzipped ngrok, and when I try to call it from the directory it is in, I get:</p>
  
  <pre><code>-bash: ngrok: command not found.
  </code></pre>
  
  <p>Does anyone know what my problem might be? Also could anyone explain what ngrok does vs deploying to heroku? If heroku would work the same, I would just do that. I'm new to using APIs, though, so I'm not clear on why I'm using ngrok.</p>
  
  <p>Thanks!</p>