update readme add note to register annotation loader
update readme add note to register annotation loader

apioo/psx-schema,apioo/psx-schema,apioo/psx-schema,apioo/psx-schema,apioo/psx-schema,apioo/psx-schema,apioo/psx-schema,apioo/psx-schema,apioo/psx-schema,apioo/psx-schema,apioo/psx-schema