Merge pull request #340 from nf-core/jfy133-patch-1

Added minimum nxf ver to README

Author: apeltzer

README.md

@@ -71,7 +71,7 @@ Additional functionality contained by the pipeline currently includes:
 
 ## Quick Start
 
-1. Install [`nextflow`](https://nf-co.re/usage/installation)
+1. Install [`nextflow`](https://nf-co.re/usage/installation) (>= v19.10.0)
 
 2. Install one of [`docker`](https://docs.docker.com/engine/installation/), [`singularity`](https://www.sylabs.io/guides/3.0/user-guide/) or [`conda`](https://conda.io/miniconda.html)