improved small Sweave problems
improved incorporation of QUEST tree and visualization



git-svn-id: svn://svn.r-forge.r-project.org/svnroot/partykit@439 255f4249-2263-4417-b1ea-8498779e27a7
added PMML example



git-svn-id: svn://svn.r-forge.r-project.org/svnroot/partykit@440 255f4249-2263-4417-b1ea-8498779e27a7