When reading GFFv3 files, do not look for ##FASTA line, since it might not always be there
Add gff files to file conversion to fasta tests
Added support for reading fasta sequences from phylip files made by seaview
added GBK to list of input file types in usage
Merge pull request #8 from martinghunt/conversions_to_fasta

Conversions to fasta - fix gff and add support for Phylip files made by Seaview