title: rspec-rails: undefined method `true?' for true:TrueClass after updating to 3.0.0.beta2 version
body: <p>After updating  rspec-rails from version 2.14.0 to 3.0.0.beta2, all tests that uses <code>be_true</code> or be_false fails.</p>
  
  <pre><code> Failure/Error: user.new_record?.should be_true
   NoMethodError:
     undefined method `true?' for true:TrueClass
  </code></pre>
  
  <p>Any suggestion? Google returns anything about this!</p>