added Windows version of ./update script
Bump src/acceptance-tests

Bump :
  Christopher Piraino and David Varvel:
     Remove unused import statements.
     Use zipped buildpack asset rather than trying to create one every time.
     Checkin a zip file for security group CATS for Windows compatibility.
  Abhijit Hiremagalur:
     Bump archiver [#77130324]
  Christopher Piraino and Jonathan Berkhahn:
     Revert "Change update-service-broker usage to reflect recent CLI change."
  Chris Piraino:
     Change update-service-broker usage to reflect recent CLI change.
Merge remote-tracking branch 'origin/pr/475' into develop