v0.0.3 created on June 29, 2016
  (1) add Dr. Rosner and Tworoger to the author list
  (2) fixed a compliation NOTE by 
   adding importFrom("stats", "dnorm", "optim", "pnorm", "qnorm", "rnorm")
   to the NAMESPACE file. Thank Dr. Kurt Hornik for help!

v0.0.2 created on June 29, 2016
submit to CRAN
