Added several comments to the HoeffdingTree code
Added several comments to the HoeffdingTree code

mkarlovc/qminer,ErikNovak/edsa-server,mkarlovc/qminer,mkarlovc/qminer,blazs/qminer,blazs/qminer,blazs/qminer,ErikNovak/data-visualization,ErikNovak/edsa-server,mkarlovc/qminer,mkarlovc/qminer,ErikNovak/QVisual,ErikNovak/QVisual,mkarlovc/qminer,blazs/qminer,blazs/qminer,blazs/qminer,ErikNovak/data-visualization