title: NoMethodError: undefined method `expect' when trying to use it within a SitePrism class
body: <p>I've got a cucumber,ruby,siteprism project where we're using the 'rspec' gem to check expectations. This is included in our env.rb and used successfully in the step definitions.</p>
  
  <p>I was now trying to make some assertions in a SitePrism class but I am getting an error. Do you know how I could use those expect() methods?
  I tried with <code>require 'rspec'</code> plus <code>include Rspec</code> in the .rb file which is defining the SitePrism class, but I got the same error still:</p>
  
  <pre><code>expect(local_value).to eq(@previous_value)
  =&gt; Error: NoMethodError: undefined method `expect' for #&lt;xxx_Object @loaded=false&gt;
  </code></pre>
  
  <p>Thank you!</p>