修改readme

@@ -67,6 +67,8 @@ $ npm stop
       "lock_height": "0"
     }]}
    ```
+## 数据库
 
+本项目使用的是sqlite数据库在database目录下
 
 [egg]: https://eggjs.org
\ No newline at end of file

@@ -55,7 +55,7 @@ module.exports = appInfo => {
     // But for this example, we will just use a local SQLite database.
     // const sequelize = new Sequelize(process.env.DB_CONNECTION_URL);
     dialect: 'sqlite',
-    storage: './database/ddn-ui-dev.db',
+    storage: './database/ddn-wallet-test.db',
     logQueryParameters: true,
     benchmark: true,
     logging: false,

 {
   "development": {
-    "storage": "./database/ddn-ui-dev.db",
+    "storage": "./database/ddn-wallet-test.db",
     "dialect": "sqlite"
   },
   "test": {
-    "storage": "./database/database_test.db",
+    "storage": "./database/ddn-wallet-test.db",
     "dialect": "sqlite"
   },
   "production": {
-    "storage": "./database/ddn-ui-prod.db",
+    "storage": "./database/ddn-wallet-test.db",
     "dialect": "sqlite"
   }
 }