Krati storage engine

We have added experimental support for Krati as a storage engine. In order to experiment with this new storage engine as a single node cluster do the following -

$ git clone [email protected]:voldemort/voldemort.git

$ cd voldemort

$ ./bin/voldemort-server.sh contrib/krati/config/single_node_cluster/

For more details about Krati check out this http://sna-projects.com/krati