add sql script

mysql-schema.sql

@@ -0,0 +1,7 @@
+DROP SCHEMA IF EXISTS `statsd_db`;
+CREATE SCHEMA `statsd_db` DEFAULT CHARACTER SET utf8 ;
+CREATE  TABLE `statsd_db`.`statistics` (
+    `timestamp` BIGINT NOT NULL ,
+    `name` VARCHAR(255) NOT NULL ,
+    `value` VARCHAR(45) NOT NULL ,
+PRIMARY KEY (`timestamp`, `name`) );