title: c# 4.0 and async with Microsoft.Bcl.Async. I don't have all the type for async modifiy
body: <p>I am using VS2012 and my project is 4.0, but I want to use the async/await keywords, so I install Microsoft.Bcl.Async.</p>
  
  <p>I try to implement my async method in the following way:</p>
  
  <pre><code>public async Task&lt;bool&gt; myMethodAync(int paramInteger)
  {
      //my code, a simple code that return a bool. Is only an example
      if(paramInteger == 2)
      {
           return true;
      }
      else return false;
  
  }
  </code></pre>
  
  <p>I get an error and I get marked the name of the method and the error says something like this: it is not find all the types needed for the modify async. is it the target of the project a wrong version or is it missing the reference for some assembly?</p>
  
  <p>I have the reference for the three assemblies Microsoft.Threading.Task, Microsoft.Threading.Task.Extensions and Microsoft.Threading.Task.Extensions.Desktop and I have the using in my class, System.Threading.task.</p>
  
  <p>What else I need to do?</p>
  
  <p>Thanks.</p>