* Added XGBoost tutorial and template
* XGBoost tutorial: Cut some clutter
* Apply suggestions from code review
Co-authored-by: Richard Liaw <rliaw@berkeley.edu>
* Added XGboost logo
* Fixed further references
Co-authored-by: Kai Fricke <kai@anyscale.com>
Co-authored-by: Richard Liaw <rliaw@berkeley.edu>