title: Install a CakeBuild AddIn from an NuGet Server with authentification
body: <p>We are using CakeBuild to automate our Xamarin Build and we have written our own AddIn for CakeBuild. </p>
  
  <p>This AddIn is now moved to an new NuGet Feed server which has a username/password authentication to access. </p>
  
  <p>Now Cake is complaining that it can't access this Nuget source. Is there a way to tell CakeBuild how to access (user/password) the Nuget source?</p>
  
  <p>I tried the following solution but I can't get it to work: <a href="https://stackoverflow.com/questions/38818190/how-do-we-authenticate-against-a-secured-nuget-server-with-cake-build">How do we authenticate against a secured NuGet server with Cake build?</a></p>
  
  <p>Does someone have a more detail description for that?</p>