added comment of saving stl file to temp
plotowanie sh coeff dla poszegolnych kosci

... w stopie-. popracic plot_sh_coeff_for_particulat_bones
plotowanie dziala, teraz zajac sie trzeba

plot_sh_coeff_for_particular_bones
corerelation ploting
dziala. teraz miary korelacji
linear modells and regression added
correlation of sh_coeff added
region growing addded, improve region_growing_on

region growing addded, improve region_growing_on_slice
ADDED : region growing for 2d finished
region growing for 2d improved

Earlier version of region growing was incorrect. The main function
run_region_growing_on_slice was improved and prepared to show Robert the
tested function.
extract_tissue_layers much easier ( image == class_num)
3d multithreshold added
automatic region growing 2d stared to comit

TO DO:  filling contours inside, finding coorinates inside contour
2d: finding bones and coordinates of each bone in image

next: moving bones; 3d finding bones and their coorinates
plot_region_growing_bones added

kolorowe kosci na 2D
region growing for 3d added, plot region growing results
calcaneus comparison has been developing
calcaneus comparison through spherical harmonics estiamtion
p2 added and saved bones as struct
p2 calcaneus comparison made