added conversion from pandas.dataFrame to numpy.arrays
added conversion from pandas.dataFrame to numpy.arrays

iamfullofspam/hep_ml,nickcdryan/hep_ml,iamfullofspam/hep_ml,anaderi/hep_ml,nickcdryan/hep_ml,chrinide/hep_ml,anaderi/hep_ml,zhmz90/hep_ml,zhmz90/hep_ml