fixing typo from VFBD to VFDB
Create get_all_vfdb.sh

adding a utility bash script for automating generating gene databases for every genus in the CP_VFs.ffn file from VFDB
Create get_genus_vfdb.sh

adding a utility bash script for automating generating gene databases for a specified genus in the CP_VFs.ffn file from VFDB
Adding usage comments
Fix typo for cd-hit stdout file extension
Fix typo for cd-hit stdout file extension
Merge pull request #23 from ppcherng/master

Adding utility bash scripts for automating VFDB gene database generation