title: Gem installed. Gem's command is not found
body: <p>I installed the <code>ruby-processing</code> gem using:</p>
  
  <pre><code>$ sudo gem install ruby-processing
  </code></pre>
  
  <p>When I try to run <code>ruby-processing</code>'s <code>rp5</code> command, this is the output I get:</p>
  
  <pre><code>rp5 run twitter_emotion_graphs.rb 
  No command 'rp5' found, did you mean:
  Command 'rpm' from package 'rpm' (main)
  Command 'rpl' from package 'rpl' (universe)
  rp5: command not found
  </code></pre>
  
  <p>Here's the context for more information (have a look at the README) :
  <a href="https://github.com/vishrut/Twitter-Emotion-Graphs" rel="nofollow">https://github.com/vishrut/Twitter-Emotion-Graphs</a></p>