title: prettify_json.rb not working from command line in zsh
body: <p>I keep getting <code>Command Not Found: prettify_json.rb</code> from the command line.  I'm using <code>zsh</code> and <code>rvm</code> so, I'm not sure if it has something to do with the paths setting in my <code>.zshrc</code>. I've compared it to some other questions here with similar problems and I'm not able to see an issue. </p>
  
  <p>here is the <code>.zshrc</code> file:</p>
  
  <pre><code>ZSH=$HOME/.oh-my-zsh
  alias vi="vim"
  
  source $ZSH/oh-my-zsh.sh
  source ~/.git-flow-completion.zsh
  
  export PATH=/opt/local/bin:/opt/local/sbin:$PATH
  export PATH=/usr/local/bin:$PATH
  PATH=$PATH:$HOME/.rvm/bin # Add RVM to PATH for scripting
  </code></pre>