Stash is a new project

Hi all,

Just wanted to let any one interested know that I am turning the
“Stash” project name over to Tony A… He really wanted the name
for a project he’s working on and since I’ve move the code for the
Stash class to the Hashery project, it decided to let him have it.
(His project looks pretty cool too, but I’ll let him announce it.)

If you are using the current ‘stash’ gem, please switch to the
‘hashery’ gem and require ‘hashery/stash’ instead of require ‘stash’.
The code is identical, so nothing else should need to be changed.