title: Environment variable returns nil
body: <p>Here's how I set my ENV variable</p>
  
  <pre><code>#~/repos/project
  export GA_USERNAME="email@gmail.com"
  </code></pre>
  
  <p>When I try to use <code>ENV['GA_USERNAME]</code> in my application, it returns nil. However, in the console it strangely prints the variable and then returns nil...</p>
  
  <pre><code>1.9.2-p320 :003 &gt; puts ENV['GA_USERNAME']
  email@gmail.com
  =&gt; nil 
  </code></pre>
  
  <p><strong>Edit</strong> I don't think my ENV variables are persisting. When I restart my computer, variable is nil and needs to be set again.</p>