landing-page: Move to chapters

Move landing page to `chapters/`. This provides proper rendering of
chapter references in Docusaurus.

Update contents to include a short description of the CCAS contents,
chapters and information about contributing.

Signed-off-by: Razvan Deaconescu <[email protected]>

chapters/landing-page/README.md

@@ -0,0 +1,27 @@
+---
+slug: /
+---
+
+# Introduction
+
+This is a landing page for the `CCAS` (Computing and Calculus for Advanced Statistics) course.
+Here you will find all the documentation needed for this course.
+It is meant to be used by teachers, trainers, students and hobbyists who want to learn about topics on calculus and statistics.
+
+The course is structured in chapters, each with their own sections.
+Each section presents a particular topic, rich in examples.
+There is a sizeable focus on the use of the [R programming language for statistical computing](https://www.r-project.org/) for demonstrating the topics in a practical manner.
+
+Chapters are:
+
+- [Numbers to Indices](../numbers-to-indices/overview/reading/read.md)
+- [Functions](../functions/overview/reading/read.md)
+- [Multivariate to Power](../multivariate-to-power/overview/reading/read.md)
+- [Vectors to Some Regression Topics](../vectors-matrix-ops/overview/reading/read.md)
+
+## Licensing and Contributing
+
+The `CCAS` contents are open educational resources ([OER](https://en.wikipedia.org/wiki/Open_educational_resources)), part of the [Open Education Hub project](https://open-education-hub.github.io/);
+they are hosted on [GitHub](https://github.com/open-education-hub/ccas), licensed under [CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0/) and [BSD 3-Clause](https://opensource.org/licenses/BSD-3-Clause).
+
+If you find an issue or want to contribute, follow the [contribution guidelines on GitHub](https://github.com/open-education-hub/ccas/blob/main/CONTRIBUTING.md).

config.yaml

@@ -13,7 +13,7 @@ docusaurus:
     math: true
     sidebar: js
     structure:
-      - Introduction: landing-page/README.md
+      - Introduction: chapters/landing-page/README.md
       - Numbers to Indices:
           - Overview:
               path: chapters/numbers-to-indices/overview