Return to generating the icons from the filesystem

lib/heroicons/icon_cache.ex

@@ -0,0 +1,12 @@
+defmodule Heroicons.IconCache do
+
+  @doc "Get's an icon's body from the filesystem"
+  # TODO implement ETS-based caching & benchmark
+  def icon_body(path) do
+    icon = File.read!(path)
+
+    <<"<svg ", body::binary>> = icon
+
+    body
+  end
+end