Updated gemfile, added comments to repairer, updater, and uninstaller task stubs

lib/application_manager/tasks/repairer.rb

@@ -1,6 +1,19 @@
 class W3DHub
   class ApplicationManager
     class Repairer < Task
+      def type
+        :repairer
+      end
+
+      def exec_task
+        # fetch manifests
+        # load manifests
+        # run presence and checksum checks
+        # extract and re/place broken/missing files
+        #   if a large number of files are missing from a single package
+        #     simply reextract the whole thing
+        # mark application as installed/repaired
+      end
     end
   end
 end