title: EF 5 Enable-Migrations : No context type was found in the assembly
body: <p>I have 4 projects : </p>
  
  <pre><code>Toombu.Entities : all models are there
  Toombu.DataAccess: Mapping, Repository and ToombuContext
  Toombu.Logique : Logic of my application
  Toombu.Web : MVC 4 application. With all others DLL.
  </code></pre>
  
  <p>I tried to enable migration in <strong>Toombu.Web</strong> but i had this error :</p>
  
  <pre><code>No context type was found in the assembly
  </code></pre>
  
  <p>How can I enable migration ?</p>