Update message and roxygen2 syntax in R/MxSE.R (issue #154 ).
Update message and roxygen2 syntax in R/MxSE.R (issue #154 ).

jpritikin/OpenMx,jpritikin/OpenMx,jpritikin/OpenMx,jpritikin/OpenMx,jpritikin/OpenMx,jpritikin/OpenMx