Adding a part of the documentation

README.md

@@ -15,3 +15,41 @@ In order to build your own map for WorkAdventure, you need:
 On the [Github repository page](https://github.com/thecodingmachine/workadventure-map-starter-kit),
 click the **"Use this template"** button. You will be prompted to enter a repository name for your map.
 
+![](docs/create_repo.png)
+
+Be sure to keep the repository "Public".
+
+In your newly created repository, click on the **Settings tab** and scroll down to the **GitHub Pages** section.
+Then select the **master** branch. 
+
+![](docs/github_pages.png)
+
+Wait a few minutes a Github will deploy a new website with the content of the repository.
+The address of the website is visible in the "GitHub Pages" section.
+
+![](docs/website_address.png)
+
+Click on the link. You should be redirected directly to WorkAdventure, on your map!
+
+## Customizing your map
+
+Your map is now up and online. You need to customize it.
+
+### Cloning the map
+
+Start by cloning the map. If you are used to Git and GitHub, simply clone the map
+to your computer using your preferred tool and jump to the next chapter.
+
+If you are new to Git, cloning the map means downloading the map to your computer.
+To do this, you will need Git, or a Git compatible tool. Our advice is to use
+[GitHub Desktop](https://desktop.github.com/).
+
+TODO: test and continue
+
+### Loading the map in Tiled
+
+TODO
+
+### Pushing the map
+
+When your changes are ready, you need to "commit" and "push" the changes back to GitHub.