Yutong_Liu

Before building, run `export OPENSSL_ROOT_DIR=/usr/local/opt/openssl`

> hi,dear > wanna know how to load the trained model,such as the **model.out** file in [demo](https://github.com/aksnzhy/xlearn/blob/master/demo/classification/criteo_ctr/run_demo_ctr.py) > thx any conclusion? thx