twitter/zipkin — pull request #153 by franklinhu (2012-09-19 23:58:55+00:00)
Title: zipkin-cassandra refactor

- Refactor cassandra dependencies out of `zipkin-server` and into a separate submodule, `zipkin-cassandra`
- Make `zipkin-server` depend on the `zipkin-cassandra` submodule.

This change is a part of #152.