Investigate a plain net::http client for less dependancies

lib/paapi/client.rb

@@ -98,7 +98,18 @@ module Paapi
       headers['Authorization'] = signature.headers['authorization']
       headers['Content-Type'] = 'application/json; charset=utf-8'
 
-      Response.new( HTTP.headers(headers).post(endpoint, json: payload ) )
+      #Response.new( HTTP.headers(headers).post(endpoint, json: payload ) )
+
+      request = Net::HTTP::Post.new(endpoint)
+      request.content_type = 'application/json; charset=UTF-8'
+      headers.each { |k, v| request[k] = v }
+      request.body = body
+      req_options = { use_ssl: uri.scheme == 'https' }
+
+      Net::HTTP.start(uri.hostname, uri.port, req_options) do |http|
+        http.request(request)
+      end
+
     end
   end