An stacked regression based on xgboost, keras for Kaggle house price competition

Description: implement a stacked regression using xgboost, keras linear regression. The score (0.11) is much better than using Tensorflow (0.45) in branch v1.0.
Development environment:
- Anaconda 4.4, Python 3.6
- Xgboost 0.6
- Window 10.