Add jacobi method of solving
Add parameter parsing to rbgs.c

Signed-off-by: Eduardo L. Buratti <elb09@c3sl.ufpr.br>
Merge branch 'jacobi' of github.com:bazk/rbgs

Signed-off-by: Eduardo L. Buratti <elb09@c3sl.ufpr.br>

Conflicts:
	rbgs.c