experiments.pl, entrada.txt: removed these "exercise" program and data
		file, respectively, since their were here just to
		refresh my poor knowledge on PERL.
clone.sh: creates symbolic links to each HTML output file from
	  loa.pl. Those files are numbered from 00 to 99 and are equal
	  when these number are congruent mod the frst argument of the
	  script.

clean.sh: removes all the automatically generated files by the other
	  programs and scripts.
README.md: updated project description to include the script files
	   recently added.