Update README.md
make the independent data stores test work with adapters that have async constructors
test for exists()
test for saving an object twice in a row
test server to proxy for a local CouchDB for testing
TouchDB / CouchDB adapter with a dependency on $.ajax (Zepto, jQuery, etc)
add TouchDB adapter to the docs
link to download for TouchDB adapter
Merge pull request #145 from jchris/touchdb

Adaptor for TouchDB and CouchDB!!! this is awesome =)