Ne traite que les fichiers md, jpg, svg et png de src.

Gruntfile.js

@@ -13,6 +13,7 @@ module.exports = grunt => {
   const SLIDE_LEVEL = 0 + process.env.SLIDE_LEVEL || 2;
   const TOC_DEPTH = 0 + process.env.TOC_DEPTH || SLIDE_LEVEL;
 
+  const sourcesGlob = ["**/*.{md,jpg,svg,png}", "!**/.*"];
   const revealJsSources = ["js/**/*.js", "css/**/*.css", "lib/**", "plugin/**"];
 
   grunt.initConfig({
@@ -33,9 +34,10 @@ module.exports = grunt => {
         files: ["Gruntfile.js"]
       },
       presentations: {
-        files: "src/**/*",
+        files: sourcesGlob,
         tasks: [],
         options: {
+          cwd: "src/.",
           debounceDelay: 1000,
           event: ["add", "change"],
           spawn: false,
@@ -88,7 +90,7 @@ module.exports = grunt => {
       sources: {
         expand: true,
         cwd: "src/",
-        src: ["**/*", "!**/.*", "!**/*.md"],
+        src: [...sourcesGlob, "!**/*.md"],
         dest: "dist/"
       }
     },