Merge pull request #36 from Y2Z/no-images-no-icons

Ignore icons if told to avoid images

src/html.rs

@@ -137,6 +137,10 @@ pub fn walk_and_embed_assets(
                 NodeMatch::Icon => {
                     for attr in attrs_mut.iter_mut() {
                         if &attr.name.local == "href" {
+                            if opt_no_images {
+                                attr.value.clear();
+                                attr.value.push_slice(TRANSPARENT_PIXEL);
+                            } else {
                                 let href_full_url = resolve_url(&url, &attr.value.to_string());
                                 let favicon_datauri = retrieve_asset(
                                     &href_full_url.unwrap(),
@@ -149,6 +153,7 @@ pub fn walk_and_embed_assets(
                             }
                         }
                     }
+                }
                 NodeMatch::Image => {
                     for attr in attrs_mut.iter_mut() {
                         if &attr.name.local == "src" {