implement iqdb wrapper

app/logical/iqdb/responses/response_202.rb

@@ -0,0 +1,19 @@
+module Iqdb
+  module Responses
+    class Response_202 < Base
+      attr_reader :original_id, :stddev, :dupes
+
+      def initialize(response_string)
+        response_string =~ /^(\d+)=([0-9.]+)/
+        @original_id = $1
+        @stddev = $2
+
+        @dupes = response_string.scan(/(\d+):([0-9.]+)/).map {|x| [x[0].to_i(16), x[1].to_f]}
+      end
+
+      def original_post_id
+        original_id.to_i(16)
+      end
+    end
+  end
+end