Create README.md

python/examples/lac/README.md

+## Chinese Word Segmentation
+
+([简体中文](./README_CN.md)|English)
+
+### Get model files and sample data
+```
+sh get_data.sh
+```
+
+the package downloaded contains lac model config along with lac dictionary.
+
+#### Start RPC inference service
+
+```
+python -m paddle_serving_server.serve --model jieba_server_model/ --port 9292
+```
+### RPC Infer
+```
+echo "我爱北京天安门" | python lac_client.py jieba_client_conf/serving_client_conf.prototxt lac_dict/
+```
+
+it will get the segmentation result
+
+### Start HTTP inference service
+```
+python lac_web_service.py jieba_server_model/ lac_workdir 9292
+```
+### HTTP Infer
+
+```
+curl -H "Content-Type:application/json" -X POST -d '{"words": "我爱北京天安门", "fetch":["word_seg"]}' http://127.0.0.1:9292/lac/prediction
+```
+
+
+