abf.normal : <anonymous>: no visible global function definition for
  ‘dnorm’
abf.t : <anonymous>: no visible global function definition for ‘dt’
abf.t : <anonymous>: no visible global function definition for ‘dnorm’
chi2ncp: no visible global function definition for ‘qchisq’
chi2ncp: no visible global function definition for ‘pchisq’
chi2ncp: no visible global function definition for ‘uniroot’
chi2ncp : <anonymous>: no visible global function definition for
  ‘pchisq’
coeff.extract: no visible global function definition for ‘coefficients’
contrasting.rainbow: no visible global function definition for
  ‘rainbow’
fitmix: no visible global function definition for ‘rexp’
fitmix: no visible global function definition for ‘sd’
fitmix.plot: no visible global function definition for ‘density’
fitmix.plot: no visible global function definition for ‘plot’
fitmix.plot: no visible global function definition for ‘rug’
fitmix.plot: no visible global function definition for ‘polygon’
fitmix.plot: no visible global function definition for ‘lines’
fitmix.plot: no visible global function definition for ‘dnorm’
fitmix.plot: no visible global function definition for ‘rainbow’
fitmix.plot : <anonymous>: no visible global function definition for
  ‘dnorm’
fitmix.plot: no visible global function definition for ‘legend’
fitmix.simulate: no visible global function definition for ‘rnorm’
fitmix1: no visible global function definition for ‘quantile’
fitmix1: no visible global function definition for ‘sd’
fitmix1 : <anonymous>: no visible global function definition for
  ‘dnorm’
gls.approx.logistic: no visible global function definition for
  ‘as.formula’
gls.approx.logistic: no visible global function definition for
  ‘predict’
gls.approx.logistic: no visible global function definition for ‘glm’
gls.approx.logistic: no visible binding for global variable
  ‘na.exclude’
grs.filter.Qrs: no visible global function definition for ‘pchisq’
grs.onesnp.apply: no visible global function definition for ‘update’
grs.onesnp.apply: no visible global function definition for
  ‘update.formula’
grs.onesnp.apply: no visible global function definition for ‘formula’
grs.plot: no visible global function definition for ‘plot’
grs.plot: no visible global function definition for ‘qnorm’
grs.plot: no visible global function definition for ‘abline’
grs.plot: no visible global function definition for ‘lines’
grs.plot: no visible global function definition for ‘points’
grs.summary: no visible global function definition for ‘pchisq’
hapmap.read.haplotypes: no visible global function definition for
  ‘read.table’
hapmap.snpdata: no visible global function definition for ‘na.omit’
multipheno.T2: no visible global function definition for ‘cor’
multipheno.T2: no visible global function definition for ‘pchisq’
read.snpdata.impute: no visible global function definition for
  ‘read.table’
read.snpdata.mach: no visible global function definition for
  ‘read.table’
read.snpdata.plink: no visible global function definition for
  ‘read.table’
run.blat: no visible global function definition for ‘read.table’
stepdown.moments2: no visible global function definition for ‘qchisq’
stepdown.moments2: no visible global function definition for ‘pchisq’
stepup.moments2: no visible global function definition for ‘qchisq’
stepup.moments2: no visible global function definition for ‘pchisq’
test.subsample: no visible global function definition for ‘update’
test.subsample: no visible global function definition for
  ‘update.formula’
test.subsample: no visible global function definition for ‘formula’
test.subsample: no visible global function definition for ‘binom.test’
Undefined global functions or variables:
  abline as.formula binom.test coefficients cor density dnorm dt
  formula glm legend lines na.exclude na.omit pchisq plot points
  polygon predict qchisq qnorm quantile rainbow read.table rexp rnorm
  rug sd uniroot update update.formula
Consider adding
  importFrom("grDevices", "rainbow")
  importFrom("graphics", "abline", "legend", "lines", "plot", "points",
             "polygon", "rug")
  importFrom("stats", "as.formula", "binom.test", "coefficients", "cor",
             "density", "dnorm", "dt", "formula", "glm", "na.exclude",
             "na.omit", "pchisq", "predict", "qchisq", "qnorm",
             "quantile", "rexp", "rnorm", "sd", "uniroot", "update",
             "update.formula")
  importFrom("utils", "read.table")
to your NAMESPACE file.