Update the README.md

The README.md is currently the stock one added by the gitlab Hugo
template. Make the README.md more relevant for the Apertis website and
provide some information on how to cause PDFs to be generated.

Signed-off-by: Martyn Welch <martyn.welch@collabora.com>

README.md

-![Build Status](https://gitlab.com/pages/hugo/badges/master/build.svg)
+# Apertis Website
 
----
-
-Trigger Build!!!
-
-Example [Hugo] website using GitLab Pages.
-
-Learn more about GitLab Pages at https://pages.gitlab.io and the official
-documentation https://docs.gitlab.com/ce/user/project/pages/.
+This is the source for the main Apertis website. It is generated using
+[Hugo](https://gohugo.io/) with a modified
+[beautifulHugo theme](https://github.com/halogenica/beautifulhugo), changing
+the look, implementing search and allowing for the generation of PDFs. The page
+is served from gitlab pages.
 
 ---
 
-<!-- START doctoc generated TOC please keep comment here to allow auto update -->
-<!-- DON'T EDIT THIS SECTION, INSTEAD RE-RUN doctoc TO UPDATE -->
-**Table of Contents**  *generated with [DocToc](https://github.com/thlorenz/doctoc)*
-
-- [GitLab CI](#gitlab-ci)
-- [Building locally](#building-locally)
-- [GitLab User or Group Pages](#gitlab-user-or-group-pages)
-- [Did you fork this project?](#did-you-fork-this-project)
-- [Troubleshooting](#troubleshooting)
-
-<!-- END doctoc generated TOC please keep comment here to allow auto update -->
-
 ## GitLab CI
 
 This project's static Pages are built by [GitLab CI][ci], following the steps
@@ -33,51 +18,32 @@ defined in [`.gitlab-ci.yml`](.gitlab-ci.yml).
 To work locally with this project, you'll have to follow the steps below:
 
 1. Fork, clone or download this project
-1. [Install][] Hugo
+1. [Install][https://gohugo.io/overview/installing/] Hugo
 1. Preview your project: `hugo server`
 1. Add content
 1. Generate the website: `hugo` (optional)
 
-Read more at Hugo's [documentation][].
+Read more at Hugo's [documentation][https://gohugo.io/overview/introduction/].
 
 ### Preview your site
 
 If you clone or download this project to your local computer and run `hugo server`,
 your site can be accessed under `localhost:1313/hugo/`.
 
-The theme used is adapted from http://themes.gohugo.io/beautifulhugo/.
-
-## GitLab User or Group Pages
-
-To use this project as your user/group website, you will need one additional
-step: just rename your project to `namespace.gitlab.io`, where `namespace` is
-your `username` or `groupname`. This can be done by navigating to your
-project's **Settings**.
-
-You'll need to configure your site too: change this line
-in your `config.toml`, from `"https://pages.gitlab.io/hugo/"` to `baseurl = "https://namespace.gitlab.io"`.
-Proceed equally if you are using a [custom domain][post]: `baseurl = "http(s)://example.com"`.
-
-Read more about [user/group Pages][userpages] and [project Pages][projpages].
-
-## Did you fork this project?
-
-If you forked this project for your own use, please go to your project's
-**Settings** and remove the forking relationship, which won't be necessary
-unless you want to contribute back to the upstream project.
+## Generating PDFs
 
-## Troubleshooting
+In order to generate PDFs, we are getting Hugo to create a simplified HTML
+pages. So as not to have every page generating a PDF, to get a page to be
+generated as a PDF (and html at the same time) add the following to the
+frontmatter of the page:
 
-1. CSS is missing! That means two things:
+```
+outputs = ["html", "pdf-in"]
+```
 
-    Either that you have wrongly set up the CSS URL in your templates, or
-    your static generator has a configuration option that needs to be explicitly
-    set in order to serve static assets under a relative URL.
+This will result in the simplifed HTML being produced in a file called
+`index.pdf-in` in the relevant directory. The kernel CI is configured to look
+for these files once Hugo has generated the site and create PDFs of them. For
+the page `www.apertis.org/concepts/foo/`, a PDF will be available as
+`www.apertis.org/concepts/foo/foo.pdf`.
 
-[ci]: https://about.gitlab.com/gitlab-ci/
-[hugo]: https://gohugo.io
-[install]: https://gohugo.io/overview/installing/
-[documentation]: https://gohugo.io/overview/introduction/
-[userpages]: http://doc.gitlab.com/ee/pages/README.html#user-or-group-pages
-[projpages]: http://doc.gitlab.com/ee/pages/README.html#project-pages
-[post]: https://about.gitlab.com/2016/04/07/gitlab-pages-setup/#custom-domains