title: Cannot find octokit gem when running ruby, but irb can find it
body: <p>I ran <code>rvm implode</code> to get a fresh install, then reinstalled RVM and ruby. Then I installed the octokit gem which I want to run.</p>
  
  <p>When I run <code>require 'octokit'</code> in <code>irb</code> everything works, but when I try it from the command line, like such:</p>
  
  <p><code>ruby file.rb</code> where file.rb is:</p>
  
  <pre><code>require 'octokit.rb'
  require 'csv.rb'
  CSV.open("node_attributes.csv", "wb") do |csv|
    csv &lt;&lt; [Octokit.user "dbussink"]
    csv &lt;&lt; [Octokit.user "sferik"]
  end
  </code></pre>
  
  <p>I get:</p>
  
  <p><code>1:in require: no such file to load -- /octokit (LoadError)</code></p>
  
  <p><code>which ruby</code> yields <code>/usr/bin/ruby</code>, <code>which irb</code> yields <code>/usr/bin/irb</code>, but <code>which octokit</code> yields <code>octokit not found</code>.</p>
  
  <p>Further, <code>rvm list</code> yields:</p>
  
  <pre><code>rvm rubies
  
  =* ruby-2.0.0-p247 [ x86_64 ]
  
  # =&gt; - current
  # =* - current &amp;&amp; default
  #  * - default
  </code></pre>
  
  <p>And, <code>gem list octokit</code> yields:</p>
  
  <pre><code>*** LOCAL GEMS ***
  
  octokit (1.25.0, 1.4.0)
  </code></pre>
  
  <p>How can I make sure that I can find <code>octokit</code> when running <code>ruby</code> from the command line? I've tried changing the path, using an explicit path in the require command, etc., but nothing seems to work!</p>