title: Set target in .csproj for gulp build
body: <p>We moved to visual studio and we are facing some problem with TFS and my gulp build process.</p>
  
  <p>In TFS, We have dev and beta environment before prod. <strong>Now my question is, after changing code in local how can I run gulp task (gulp dev) in .csproj  as a  so I can create main.css for dev and path change in my mainlayout.cshtml?</strong> </p>
  
  <p>For ex: I have updated event.scss in local and it will modify my local main.css(which is not in TFS and Project - so we will not get permission issues). Upon check-in from TFS I have to create main.css for dev so that it will render in dev environment. 
  I know it's done by build manager, but "How?" That I don't know.</p>
  
  <p>Please help me with this, if you can. :)</p>
  
  <p>Thanks in advance!!!!</p>