Added exp4 template and uploaded pictures

	new file:   exp4/report/img/IMG_20130321_123136.jpg
	new file:   exp4/report/img/IMG_20130321_123221.jpg
	new file:   exp4/report/img/IMG_20130321_123242.jpg
	new file:   exp4/report/img/IMG_20130321_125742.jpg
	new file:   exp4/report/img/IMG_20130321_153016.jpg
	new file:   exp4/report/img/IMG_20130321_153035.jpg
	new file:   exp4/report/report4.tex