anchor.diff:  shift
   if "%1" equ "" call :usage && exit /b 1
   set build-platform=%1
  +goto args-continue
  +
  +:arg-skip-unittests
  +set run-unit-tests=0
   goto args-continue
   
   :args-continue
  
positive.code: echo build.cmd [options]
  echo options:
  echo  -c, --clean           delete artifacts from previous build before building
  echo  --config ^<value^>      [Debug] build configuration (e.g. Debug, Release)
  echo  --platform ^<value^>    [Win32] build platform (e.g. Win32, x64, ...)
  goto :eof
  
negative.code: call :build-a-solution "%build-root%\bindings\uwp\uwp-binding\Microsoft.Azure.IoT.Gateway.Test.sln" %build-config% %build-platform%
  if not !errorlevel!==0 exit /b !errorlevel!
  
  if not %run-unit-tests%==1 goto :eof
  rem ------------------
  rem -- run unit tests
  
  