updated migration info

codepot/README

@@ -16,6 +16,7 @@ UPGRADING FROM 0.2.0
   mysql> ALTER TABLE site ADD COLUMN(summary VARCHAR(255) NOT NULL);
   mysql> RENAME TABLE user TO user_account;
   mysql> ALTER TABLE file DROP INDEX encname;
+  mysql> create the file_list table according to the definition found in codepot.mysql
   mysql> INSERT INTO file_list (projectid, name, filename, encname, md5sum, description) SELECT projectid, name, name, encname, md5sum, summary FROM file WHERE md5sum != '';
   mysql> ALTER TABLE file DROP COLUMN summary;
   mysql> ALTER TABLE file DROP COLUMN md5sum;