#Issue-6 Added new models for Regression Training

[PalaVenkiReddy]

Added Decision Tree Regressor : For small training datasets training it with Random forest regressor takes more computation time without much better results when compared to Decision Tree Regressor. Added LGBMRegressor : It is capable of performing equally good with large datasets with a significant reduction in training time as it supports parallel learning.

[sagnik1511]

You should not delete one PR, rather rename or add updates in the comments. And the right approach to tag the issue is like this :

6

Hope you find it useful, happy contributing!!!

[PalaVenkiReddy]

Thank you bhaiya

[PalaVenkiReddy]

Is this pull request fine bhaiya @sagnik1511 ?