Package check result: NOTE

Check: CRAN incoming feasibility, Result: NOTE
  Maintainer: ‘Zhu Wang <zwang145@uthsc.edu>’
  
  New maintainer:
    Zhu Wang <zwang145@uthsc.edu>
  Old maintainer(s):
    Zhu Wang <zhuwang@gmail.com>

Check: examples, Result: NOTE
  Examples with CPU time > 2.5 times elapsed time
             user system elapsed ratio
  irboost   7.098  0.049   0.765 9.342
  irb.train 1.395  0.031   0.415 3.436