Add categories to readme-vars.yml

readme-vars.yml

@@ -6,6 +6,7 @@ project_url: "http://www.projectsend.org"
 project_logo: "http://www.projectsend.org/wp-content/themes/projectsend/img/screenshots.png"
 project_blurb: "[{{ project_name|capitalize }}]({{ project_url }}) is a self-hosted application that lets you upload files and assign them to specific clients that you create yourself. Secure, private and easy. No more depending on external services or e-mail to send those files."
 project_lsio_github_repo_url: "https://github.com/linuxserver/docker-{{ project_name }}"
+project_categories: "File Sharing"
 # supported architectures
 available_architectures:
   - {arch: "{{ arch_x86_64 }}", tag: "amd64-latest"}