added description to nnet
added description to nnet

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