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README.md

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 A snakemake workflow that wraps various phage-host prediction tools.
 
+[![Snakemake](https://img.shields.io/badge/snakemake-≥5.30-brightgreen.svg?style=flat)](https://snakemake.readthedocs.io)
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 * Uses 
 [Singularity](https://sylabs.io/) containers for execution of all tools.
 When possible (i.e. the image is not larger than a few `G`s),