Update README

README.md

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 # About this tutorial
 
-Frama-C (FRAmework for Modular Analysis of C programs) is a set of interoperable program analyzers for C programs. I have used this software during all my PhD thesis and after, mostly for deductive proof using the WP plugin. So, I wrote a tutorial that allows to learn ACSL (the specification language of Frama-C) and the use of WP by practice, also getting some theorical rudiments about deductive proof.
+Frama-C (FRAmework for Modular Analysis of C programs) is a set of interoperable
+program analyzers for C programs. I have used this software during all my PhD
+thesis and after, mostly for deductive proof using the WP plugin. So, I wrote a
+tutorial that allows to learn ACSL (the specification language of Frama-C) and
+the use of WP by practice, also getting some theorical rudiments about deductive
+proof.
 
 It can be used for both learning and teaching, I hope you will have some fun with it :) .
 
-The last version is available on my website in [English](https://allan-blanchard.fr/publis/frama-c-wp-tutorial-en.pdf) and in [French](https://allan-blanchard.fr/publis/frama-c-wp-tutoriel-fr.pdf).
+The last stable version is available on my website in
+[English](https://allan-blanchard.fr/publis/frama-c-wp-tutorial-en.pdf) and in
+[French](https://allan-blanchard.fr/publis/frama-c-wp-tutoriel-fr.pdf), and in
+the [Releases](https://github.com/AllanBlanchard/tutoriel_wp/releases) section
+on GitHub.
 
-An online French version is available [on Zeste de Savoir](https://zestedesavoir.com/contenus/beta/885/introduction-a-la-preuve-de-programmes-c-avec-frama-c-et-son-greffon-wp/).
+An online French version is available
+[on Zeste de Savoir](https://zestedesavoir.com/contenus/beta/885/introduction-a-la-preuve-de-programmes-c-avec-frama-c-et-son-greffon-wp/).
+
+A recent build from the `master` branch is available:
+- [English](https://allan-blanchard.fr/publis/frama-c-wp-tutorial-master-en.pdf)
+- [French](https://allan-blanchard.fr/publis/frama-c-wp-tutoriel-master-fr.pdf)
+
+I'll try to keep these links up to date, since GitHub does not provide a simple
+way to access to the last built artifacts 😠.
 
 ## Building
 
 In order to build the files, you can use docker
 ```sh
 docker build -t tutoriel_wp .
 docker run --rm -v $PWD:/mnt -w /mnt tutoriel_wp make
-```
+```