v0.2.0-rc0: a preview of the v2 API

This is a preview release of etcd 0.2.0 with the new etcd v2 API. This branch is still baking but we wanted to give people a chance to try out the new API and have time to give us feedback on the changes. You can find the v2 API docs here: http://docs.etcd.apiary.io/

As always trying out etcd is as easy as downloading one of the binaries below and extracting it and then running:

./etcd
./etcdctl set hello-world "This is my first key"
./etcdctl get hello-world

If you are filing issues please indicate you are running v0.2.0-rc0 and send PRs against the 0.2 branch.