orm update docs

orm/docs/zh/Test.md

@@ -0,0 +1,34 @@
+## Test ORM
+
+测试代码参见
+
+```bash
+models_test.go // 表定义
+orm_test.go // 测试用例
+```
+
+#### MySQL
+```bash
+mysql -u root -e 'create database orm_test;'
+export ORM_DRIVER=mysql
+export ORM_SOURCE="root:@/orm_test?charset=utf8"
+go test -v github.com/astaxie/beego/orm
+```
+
+
+#### Sqlite3
+```bash
+touch /path/to/orm_test.db
+export ORM_DRIVER=sqlite3
+export ORM_SOURCE=/path/to/orm_test.db
+go test -v github.com/astaxie/beego/orm
+```
+
+
+#### PostgreSQL
+```bash
+psql -c 'create database orm_test;' -U postgres
+export ORM_DRIVER=postgres
+export ORM_SOURCE="user=postgres dbname=orm_test sslmode=disable"
+go test -v github.com/astaxie/beego/orm
+```