Update README.txt

weed/filer/cassandra/README.txt

@@ -1,14 +1 @@
-1. create a keyspace
-
-CREATE KEYSPACE seaweedfs WITH replication = {'class':'SimpleStrategy', 'replication_factor' : 1};
-
-2. create filemeta table
-
- USE seaweedfs;
-
- CREATE TABLE filemeta (
-    directory varchar,
-    name varchar,
-    meta blob,
-    PRIMARY KEY (directory, name)
- ) WITH CLUSTERING ORDER BY (name ASC);
+Deprecated by cassandra2