Update readme

Author: valicm

README.md

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 ## Description
 Bash script for updating Drupal core and/or contributed modules with Composer. 
 It can be used as a GitHub action or as a standalone script/integrated into other CI tools.
 
+![](https://vallic.com/sites/default/files/2023-11/github_pr.png "GitHub Drupal Upgrades")
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 ## Features
 * perform minor or major updates to Drupal core / contributed modules
 * options to exclude modules from check and/or enable Drupal core checks