Add Rd file for dataFrame

git-svn-id: https://hedgehog.fhcrc.org/bioconductor/trunk/madman/Rpacks/SNPchip@72905 bc3139a8-67e5-0310-9ffc-ced21a209358
remove xyplot2 and xyplot from exports

git-svn-id: https://hedgehog.fhcrc.org/bioconductor/trunk/madman/Rpacks/SNPchip@72906 bc3139a8-67e5-0310-9ffc-ced21a209358
update unit test and xyplot Rd file

git-svn-id: https://hedgehog.fhcrc.org/bioconductor/trunk/madman/Rpacks/SNPchip@72907 bc3139a8-67e5-0310-9ffc-ced21a209358