added  RWJ/demo_RWJ.r and RWJ/img/*

 Changes to be committed:
	new file:   RWJ/demo_RWJ.r
	new file:   RWJ/demo_RWJ.r.htm
	new file:   RWJ/demo_RWJ.r.html
	new file:   RWJ/img/Fig_1.pdf
	new file:   RWJ/img/Fig_1.png
	new file:   RWJ/img/Fig_2.pdf
	new file:   RWJ/img/Fig_2.png
	new file:   RWJ/img/Fig_3.pdf
	new file:   RWJ/img/Fig_3.png
	new file:   RWJ/img/Fig_4.png
	new file:   RWJ/img/Fig_5.pdf
	new file:   RWJ/img/Fig_5.png
	new file:   RWJ/img/Fig_6.pdf
	new file:   RWJ/img/Fig_6.png
	new file:   RWJ/img/Fig_7.pdf
	new file:   RWJ/img/Fig_7.png
	new file:   RWJ/img/Pic_1.png
	new file:   RWJ/img/Pic_2.png
	new file:   RWJ/img/Pic_3.png
	new file:   RWJ/img/Pic_4.png
	new file:   RWJ/img/jFig_1.htm