feat: add doc to update the doc

contributing/GenerateCss.md

@@ -7,12 +7,12 @@
 Generate the CSS file with the following command:
 
 ```bash
-npm run lessmin & sassmin
+npm run lessmin && npm run sassmin
 ```
 or for debug purpose you can run 
 
 ```bash
-npm run less & sass
+npm run less && npm run sass
 ```
 
 2 files will be generated in the `css` folder: `keyrune.css` and `keyrune.min.css`.
@@ -20,3 +20,7 @@ npm run less & sass
 ![generate-css](./images/generate-css.png)
 
 Yaay 🎉 you have generate the CSS file! Now you can use the new icon in the website. Follow the [Usage inside README.md](../README.md#usage)
+
+---
+**Go to the next step: [Update the documentation](./UpdateDocumentation.md)**
+---

contributing/UpdateDocumentation.md

@@ -1 +1,25 @@
 # Update existing documentation
+
+After you have added a new set icon, update the codebase and generate the new `keyrune.css` file, you need to update the documentation to reflect the changes.
+
+## Steps
+
+1. Run this command
+    ```bash
+    npm run build
+    ```
+    This will copy fonts and css files to the `docs` folder.
+2. Add the new icon usage inside the `cheatsheet.html`.
+    ```diff
+    + <div class="icon">
+    ```
+    Replace `fdn` with the short code of the new icon.
+3. Add the new icon usage inside the `icons.html`.
+    ```diff
+    + <div class="icon" id="fdn" name="Foundation" data-name="Foundation" data-class="fdn" data-unicode="x1f31f" data-added="v3.14.0">
+    +    <span class="name"><i class="ss ss-fdn"></i> Foundation <em>(fdn)</em></span>
+    + </div>
+    ```
+    Replace `fdn` with the short code of the new icon.
+
+    > A data attribute with the version is present, but i don't know how it's working. If you have info about it, please add it in this doc here. 🙏

docs/cheatsheet.html

@@ -171,6 +171,7 @@
                     <span class="utf"><i>&#xe669;</i> ss-evg <code>&amp;#xe669;</code></span>
                     <span class="utf"><i>&#xe621;</i> ss-exo <code>&amp;#xe621;</code></span>
                     <span class="utf"><i>&#xe69a;</i> ss-exp <code>&amp;#xe69a;</code></span>
+                    <span class="utf"><i>&#x1f31f;</i> ss-fdn <code>&amp;#x1f31f;</code></span>
                     <span class="utf"><i>&#xe617;</i> ss-fem <code>&amp;#xe617;</code></span>
                     <span class="utf"><i>&#xe654;</i> ss-frf <code>&amp;#xe654;</code></span>
                     <span class="utf"><i>&#xe63c;</i> ss-fut <code>&amp;#xe63c;</code></span>

docs/icons.html

@@ -452,6 +452,9 @@
                     <div class="icon" id="blb" name="Bloomburrow" data-name="Bloomburrow" data-class="blb" data-unicode="e9cd" data-added="v3.14.0">
                         <span class="name"><i class="ss ss-blb"></i> Bloomburrow <em>(blb)</em></span>
                     </div>
+                    <div class="icon" id="fdn" name="Foundation" data-name="Foundation" data-class="fdn" data-unicode="x1f31f" data-added="v3.14.0">
+                        <span class="name"><i class="ss ss-fdn"></i> Foundation <em>(fdn)</em></span>
+                    </div>
                 </div>
             </section>
             <section class="content">