title: ServiceReference always points to 4.0 Framework version
body: <p>I am trying to add ServiceReference to class library which is targeting 3.5 framework using VS2012.
  However, VS2012 generates classes which are targeting 4.0 framework.
  The problem is that on hosting machine, there is no 4.0 framework installed and I end up with an exception.
  Is there a way to tell VS2012 to generate proxy classes which will reference framework 3.5 or somehow update manually generated classes to target 3.5 instead of 4.0 framework?</p>