Mention filetypes in the readme

scripts/build

@@ -529,6 +529,13 @@ def extract(packages)
     else
       output << "- [#{package["name"]}](https://github.com/#{repo})"
     end
+
+    if package["filetypes"].size > 1
+      output[-1] << "(#{package["filetypes"].map { |f| f["name"] }.join(", ")[0..-2]} and #{package["filetypes"].last["name"]} filetypes)"
+    elsif package["filetypes"].size > 0
+      output[-1] << "(#{package["filetypes"].first["name"]} filetype)"
+    end
+
     progress
   end