Based on OMIM morbid, create gene list.

OMIM morbid can be downloaded. This script will reformat that list into
a basic gene list. One still needs to put the list through fetch_info to
complete the missing information.
Added chromosome as new column

Extracted the chromosome information from the gene locus.
Resolve OMIM symbols with EnsEMBL

ftpomim: returns multiple OMIM symbols now.
fetch_info: outputs errors prettier.