Fix to include metadata when installing with pip/conda

[DarianHole]

Currently, the metadata tables associated with the schemes are not also being included when installing biohansel.

Small change to the setup file to make sure they are copied over with the scheme fasta files

Additional documentation change to the help (-h) statement for Metadata (-M) flag to say which tabular files will work with it (ie .tsv and .tab)

[peterk87]

Hi @DarianHole and @glabbe

How about changing this line (https://github.com/phac-nml/biohansel/blob/development/bio_hansel/metadata.py#L39) to:

dfmd = FILE_EXT_TO_PD_READ_FUNC.get(file_ext, pd.read_table)(path)

to default to reading a metadata file as a tab-delimited table.

What do you think?

[DarianHole]

@peterk87 That seems like a good idea for an improvement. Most of the files that biohansel is working with are tab delimited and it would make it more consistent. We'll see what @glabbe says.

Here, I just noticed (after doing work on my own setup.py file) that the metadata for typhi was not being downloaded when installing it through conda.

[glabbe]

Sounds good to me @peterk87 and @DarianHole , we can specify to users in the documentation that metadata tables need to be tab-delimited

[Takadonet]

good