split image assets to required and demo-only

build/browsersync.js

@@ -14,11 +14,12 @@ bs.init({
       '/': 'tmp',
       '/dist': 'tmp-dist',
       '/libs': 'static/libs',
-      '/img': 'static/img',
+      '/tmp-dist/img': 'img',
+      '/img-demo': 'static/img',
       '/node_modules': 'node_modules',
     },
   },
-  files: ['tmp/**/*', 'tmp-dist/css/*.css', 'tmp-dist/js/*.js'],
+  files: ['tmp/**/*', 'tmp-dist/css/*.css', 'tmp-dist/js/*.js', 'tmp-dist/img/*.svg'],
   watchOptions: {
     ignoreInitial: true,
   },