update meta theme

app/views/layouts/application.html.haml

@@ -1,6 +1,7 @@
 !!! 5
 %html
   %head
+    %meta{content: '#0C84E4', name: 'theme-color'}
     %meta{charset: 'utf-8'}
     %meta{'http-equiv' => 'X-UA-Compatible' ,content: 'IE=edge'}
     %meta{name: 'viewport', content: 'width=device-width, initial-scale=1'}