Refseq-masher

Fixed
- Fixed a bug where missing Mash output would cause the program to crash.

Added:

- `--tmp-dir` command-line option for `matches` command to specify directory to write temporary files to (only Mash sketches are written to this directory)

First PyPI release:

https://pypi.python.org/pypi/refseq-masher?version=0.1.0

Added 2 commands mapping to `mash sketch/dist` (matches) and `mash screen` (contains) to find the top NCBI RefSeq Genome matches are to your input sequences and what RefSeq Genomes are contained in your input sequences, respectively.

Mash v2.0+ required.