Description:

Stubs out a new cassandra migration. 

Pass the migration name, either CamelCased or under_scored. A migration
class is generated in db/cassandra_migrate, prefixed by a timestamp of the
current date and time

Example:

rails generate cassandra_migration create_tweets

This will create:
  db/cassandra_migrate/20080514090912_create_tweets.rb

Inside this file we'll have a migration ready for completion:
  class CreateTweets << CassandraMigrations::Migration
    def up

    end

    def down

    end
  end