bring up to date
Merge branch 'master' of https://github.com/aeb6y/EHRUG_Part_1

Conflicts:
	EHRUG_Part_1.Rnw
	EHRUG_Part_1.log
	EHRUG_Part_1.nav
	EHRUG_Part_1.pdf
	EHRUG_Part_1.synctex.gz
	EHRUG_Part_1.tex
	EHRUG_Part_1.toc
update