Update readme.md

readme.md

@@ -33,7 +33,7 @@ gw-accounting file
 database:
   autoMigrate: true # Migrate the database schema on startup
   database: cdr # Database name
-  driver: postgres # Database driver (mysql|mssql|postgres)
+  driver: postgres # Database driver (mysql|mssql|postgres|sqlite)
   host: localhost # Database host
   limit: 100 # Maximum number of records to insert in bulk
   password: 012345abc # Database password