Update __init__.py

python/paddle_serving_app/reader/__init__.py

@@ -11,10 +11,9 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-# pylint: disable=doc-string-missing
-import os
-
 from .chinese_bert_reader import ChineseBertReader
+from .image_reader import ImageReader, File2Image, URL2Image, Sequential, Normalize, Base64ToImage
+from .image_reader import CenterCrop, Resize, Transpose, Div, RGB2BGR, BGR2RGB, ResizeByFactor
 from .image_reader import RCNNPostprocess, SegPostprocess, PadStride, BlazeFacePostprocess
 from .image_reader import DBPostProcess, FilterBoxes, GetRotateCropImage, SortedBoxes
 from .lac_reader import LACReader