minor changes to GETDATA#21

Merged

sux13 merged 2 commits intosux13:masterfrom

leduke2000:master

Feb 16, 2016

Commits on Jul 11, 2015

in Gettinf and Cleaning Data corrected a bad exemple of path in xpathSApply exemple in extract content by attributes
leduke2000
committed

Commits on Aug 2, 2015

minor corrections in some code examples
leduke2000
committed