title: Search and replace moduleFor('foo:bar') with moduleFor('foo:bar', 'unit@foo:bar')
body: <p>I am working with a large set of qunit unit tests in a folder called "tests". At the top of each file is the following, for example:</p>
  
  <pre><code>moduleFor('mixin:foo')
  
  // or
  
  moduleFor('route:bar')
  </code></pre>
  
  <p>I'd like to write a search and replace for these files such that each occurrence would be replaced with this updated style:</p>
  
  <pre><code>moduleFor('mixin:foo', 'unit@mixin:foo')
  
  // or 
  
  moduleFor('route:bar', 'unit@route:foo')
  </code></pre>