aspnet/Caching — pull request #27 by Praburaj (2014-11-26 20:41:54+00:00)
Title: Moving IExpiration trigger into a new namespace

While refactoring the IFileSystem, IExpirationTrigger was moved to a new namespace. So moving this namespace as well.

Related PR: https://github.com/aspnet/FileSystem/pull/20/files

@lodejard @Tratcher @pranavkm