text: #' gglorenz: Plotting Lorenz Curve with ggplot2
  #'
  #' The package provides statistical transformations for plotting
  #' empirical ordinary Lorenz curve and generalized Lorenz curve.
  #'
  #' @name gglorenz
  #' @docType package
  #' @rdname gglorenz-package
  #' @author JJ Chen
  NULL
  