Add Pipeline diagram

CHANGELOG.md

@@ -18,6 +18,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - [[#799](https://github.com/nf-core/rnaseq/issues/799)] - Issue with using `--retain_unpaired` with the `FASTQC_UMITOOLS_TRIMGALORE:TRIMGALORE` module
 - [[#802](https://github.com/nf-core/rnaseq/issues/802)] - `--bam_csi_index` error generated if `--skip_alignment` specified
 - [[#808](https://github.com/nf-core/rnaseq/issues/808)] - Auto-detect usage of Illumina iGenomes reference
+- [[#809](https://github.com/nf-core/rnaseq/issues/809)] - Add metro map for pipeline
 - [[#814](https://github.com/nf-core/rnaseq/issues/814)] - Use decimal values for `--min_mapped_reads`
 - Updated pipeline template to [nf-core/tools 2.3.2](https://github.com/nf-core/tools/releases/tag/2.3.2)
 

README.md

@@ -30,6 +30,8 @@ You can find numerous talks on the [nf-core events page](https://nf-co.re/events
 
 ## Pipeline summary
 
+![nf-core/RNASeq Workflow Diagram](docs/images/pipeline_diagram_grey.png)
+
 The SRA download functionality has been removed from the pipeline (`>=3.2`) and ported to an independent workflow called [nf-core/fetchngs](https://nf-co.re/fetchngs). You can provide `--nf_core_pipeline rnaseq` when running nf-core/fetchngs to download and auto-create a samplesheet containing publicly available samples that can be accepted directly as input by this pipeline.
 
 1. Merge re-sequenced FastQ files ([`cat`](http://www.linfo.org/cat.html))
@@ -101,6 +103,8 @@ These scripts were originally written for use at the [National Genomics Infrastr
 
 The pipeline was re-written in Nextflow DSL2 and is primarily maintained by Harshil Patel ([@drpatelh](https://github.com/drpatelh)) from [Seqera Labs, Spain](https://seqera.io/).
 
+The pipeline workflow diagram was designed by Sarah Guinchard ([@G-Sarah](https://github.com/G-Sarah)) and James Fellows Yates ([@jfy133](https://github.com/jfy133)).
+
 Many thanks to other who have helped out along the way too, including (but not limited to):
 [@Galithil](https://github.com/Galithil),
 [@pditommaso](https://github.com/pditommaso),