Signing Assemblies using VS sln builds

In my current sytem, we use MSBUILD to handle our assemblies.  And I can still do that today with TC.  But I had been looking at taking advantage of the VS sln build step types.

In our current system the MSBUILD task uses AssemblyOriginatorKeyFile=<somefile.snk>;DelaySign=false in order to sign my production release assemblies.

How would I do this in the new VS sln build step?

-MarkV01