title: Devise Suspendable gem failure due to reliance to Activatable module
body: <p>I get the following error trying to use the <a href="https://github.com/amolk/devise_suspendable" rel="nofollow">devise_suspendable</a> gem.</p>
  
  <pre><code>/home/graeme/.rvm/gems/ree-1.8.7-2011.03@epra/gems/devise-1.4.5/lib/devise/models.rb:60:in `const_get': uninitialized constant Devise::Models::Activatable (NameError)
  </code></pre>
  
  <p>It's trying to use the activatable module in Devise but I have a feeling it's been deprecrated.</p>
  
  <p>I've tried running with the suspendable module included, but ignoring the activatable module. I don't get any errors, but it doesn't stop a suspended user from logging in either.</p>