feat: update README.md and README.ZH_CN.md (go-gorm#548)

* feat: update README.md and README.ZH_CN.md

* feat: update README.md and README.ZH_CN.md

* feat: update README.md and README.ZH_CN.md

README.ZH_CN.md

@@ -2093,6 +2093,8 @@ go install gorm.io/gen/tools/gentool@latest
 ```bash
 $ gentool -h
 Usage of gentool:
+  -c string
+      is path for gen.yml
   -db string
       input mysql or postgres or sqlite or sqlserver. consult[https://gorm.io/docs/connecting_to_the_database.html] (default "mysql")
   -dsn string
@@ -2121,6 +2123,38 @@ Usage of gentool:
 
 ``` bash
 gentool -dsn "user:pwd@tcp(127.0.0.1:3306)/database?charset=utf8mb4&parseTime=True&loc=Local" -tables "orders,doctor"
+gentool -c "./gen.yml"
+```
+
+配置文件示例:
+
+
+config example:
+
+```
+version: "0.1"
+database:
+# consult[https://gorm.io/docs/connecting_to_the_database.html]"
+dsn : "username:password@tcp(address:port)/db?charset=utf8mb4&parseTime=true&loc=Local"
+# input mysql or postgres or sqlite or sqlserver. consult[https://gorm.io/docs/connecting_to_the_database.html]
+db  : "mysql"
+# enter the required data table or leave it blank.You can input : orders,users,goods
+tables  : "user"
+# specify a directory for output
+outPath :  "./dao/query"
+# query code file name, default: gen.go
+outFile :  ""
+# generate unit test for query code
+withUnitTest  : false
+# generated model code's package name
+modelPkgName  : ""
+# generate with pointer when field is nullable
+fieldNullable : false
+# generate field with gorm index tag
+fieldWithIndexTag : false
+# generate field with gorm column type tag
+fieldWithTypeTag  : false
+
 ```
 
 ## <span id="maintainers">维护者</span>

README.md

@@ -2084,6 +2084,8 @@ usage:
 ```bash
 $ gentool -h
 Usage of gentool:
+  -c string
+      is path for gen.yml
   -db string
       input mysql or postgres or sqlite or sqlserver. consult[https://gorm.io/docs/connecting_to_the_database.html] (default "mysql")
   -dsn string
@@ -2112,6 +2114,35 @@ example:
 
 ``` bash
 gentool -dsn "user:pwd@tcp(127.0.0.1:3306)/database?charset=utf8mb4&parseTime=True&loc=Local" -tables "orders,doctor"
+gentool -c "./gen.yml"
+```
+
+config example:
+
+```
+version: "0.1"
+database:
+  # consult[https://gorm.io/docs/connecting_to_the_database.html]"
+  dsn : "username:password@tcp(address:port)/db?charset=utf8mb4&parseTime=true&loc=Local"
+  # input mysql or postgres or sqlite or sqlserver. consult[https://gorm.io/docs/connecting_to_the_database.html]
+  db  : "mysql"
+  # enter the required data table or leave it blank.You can input : orders,users,goods
+  tables  : "user"
+  # specify a directory for output
+  outPath :  "./dao/query"
+  # query code file name, default: gen.go
+  outFile :  ""
+  # generate unit test for query code
+  withUnitTest  : false
+  # generated model code's package name
+  modelPkgName  : ""
+  # generate with pointer when field is nullable
+  fieldNullable : false
+  # generate field with gorm index tag
+  fieldWithIndexTag : false
+  # generate field with gorm column type tag
+  fieldWithTypeTag  : false
+
 ```
 
 ## Maintainers