Input file:	PARIS2_HEK293_homo.sam
		PARIS2_HEK293_gap1.sam
Command: 	python get_arms_distance.py  exampels/plot_heatmap_for_homosam/PARIS2_HEK293_homo.sam homo 2 PARIS2_homo_distance.txt
		python get_arms_distance.py  exampels/plot_heatmap_for_homosam/PARIS2_HEK293_gap1.sam gap1 5 PARIS2_gap1_distance.txt

