Update README.md #5

README.md

-# metagWGS
+# **metagWGS**
 
+# Introduction
+
+**metagWGS** is a Nextflow bioinformatics analysis pipeline used for Metagenomic Shotgun Sequencing data.
+
+The workflow processes raw data from FastQ inputs, control quality data (FastQC and multiQC), trim adapters sequences and clean reads (Cutadapt, Sickle), suppress contaminants (BWA mem)... See the output documentation for more details of the results.
+
+The pipeline is built using Nextflow, a bioinformatics workflow tool to run tasks across multiple compute infrastructures in a very portable manner. It comes with singularity containers making installation trivial and results highly reproducible.
+
+## Installation
+
+## Prerequisite
+
+* Cutadapt >= v1.15
+* Sickle v1.33
+* FastQC >= v0.11.1
+* MultiQC 
+* BWA mem
+* Python >= v3
+
+## Usage
+
+```python
+nextflow run main.nf
+```
+
+## Contributing
+
+
+## License