[BioPython] Martel links are broken

[adalke at mindspring.com]

Daniel Rubin <dlrubin at yahoo.com>:
> All links to Martel stuff seem to be broken, for
> example:
> 
> biopython.org/~dalke/Martel/Martel-0.5/doc/writing_a_format.txt

My fault.  I was cleaning up my account and didn't
realize there were external links to there.

I'm travelling now - when I get back I'll see if I can
recover those files.

                                  Andrew