use svg logo

Author: manuelmeurer

app/views/shared/_header.html.haml

@@ -1,5 +1,5 @@
 %header
-  = navbar container: "lg", expand_at: "md", bg: "dark", brand: "RubyDocs" do
+  = navbar container: "lg", expand_at: "md", bg: "dark", brand: inline_svg("logo.svg") do
     = navbar_collapse class: "justify-content-end" do
       = navbar_group do
         = navbar_item tag.i(class: %w(fab fa-xl fa-github)), "https://github.com/rubydocs/app", {}, target: "_blank"