add PWA icon , update readme

Dockerfile

@@ -10,10 +10,15 @@ LABEL maintainer="thelamer"
 ENV TITLE=Chromium
 
 RUN \
+  echo "**** add icon ****" && \
+  curl -o \
+    /kclient/public/icon.png \
+    https://raw.githubusercontent.com/linuxserver/docker-templates/master/linuxserver.io/img/chromium-logo.png && \
   echo "**** install packages ****" && \
   apt-get update && \
   apt-get install -y --no-install-recommends \
-    chromium && \
+    chromium \
+    chromium-l10n && \
   echo "**** cleanup ****" && \
   apt-get autoclean && \
   rm -rf \