more psuedocode on how i want to lay this out. its late and i need to sleep

classes/nvd_downloader.rb

@@ -64,7 +64,15 @@ class NvdDownloader
         # the modified filename with the meta file extension included
     end
 
+    def check_metafile(metafile)
+        # open the metafile, build a hash of k/v pairs of the data inside of the file
+        # check each k/v pair against the file on disk
+        # return a new hash with the same k as before, but the value being a boolean true or false if the value from the k/v pair
+    end
+
     def detect_changes(metafile)
         # this should be a method that detects changes in the metafile. 
+        # run the check_metafile method against the current metafile on disk.
+        # if there is a change, return true, if not return false
     end
 end