diff --git a/apiapp.go b/apiapp.go
index ecf61ef..f016045 100644
--- a/apiapp.go
+++ b/apiapp.go
@@ -32,6 +32,8 @@ bee api [appname] [-tables=""] [-driver=mysql] [-conn=root:@tcp(127.0.0.1:3306)/
     -tables: a list of table names separated by ',', default is empty, indicating all tables
     -driver: [mysql | postgres | sqlite], the default is mysql
     -conn:   the connection string used by the driver, the default is ''
+             e.g. for mysql:    root:@tcp(127.0.0.1:3306)/test
+             e.g. for postgres: postgres://postgres:postgres@127.0.0.1:5432/postgres
 	
 if conn is empty will create a example api application. otherwise generate api application based on an existing database.
 
diff --git a/g_appcode.go b/g_appcode.go
index fc5ce83..532b979 100644
--- a/g_appcode.go
+++ b/g_appcode.go
@@ -680,11 +680,7 @@ func (*PostgresDB) GetGoDataType(sqlType string) (goType string) {
 // deleteAndRecreatePaths removes several directories completely
 func createPaths(mode byte, paths *MvcPath) {
 	if (mode & O_MODEL) == O_MODEL {
-		err := os.Mkdir(paths.ModelPath, 0777)
-		if err != nil {
-			ColorLog("[ERRO]", err)
-			os.Exit(2)
-		}
+		os.Mkdir(paths.ModelPath, 0777)
 	}
 	if (mode & O_CONTROLLER) == O_CONTROLLER {
 		os.Mkdir(paths.ControllerPath, 0777)