Complete the GET handler. It would return some wrong codes before.

dudeswave/src/dudeswave_handler.erl

@@ -26,7 +26,8 @@ else is considered a bad request, apart from the obvious case of 500
 
 -export([init/2, terminate/3, allowed_methods/2,
     content_types_provided/2, known_methods/2,
-    resource_exists/2, send_body/2]).
+    resource_exists/2, previously_existed/2,
+    moved_permanently/2, send_body/2]).
 
 -include_lib("storage/include/storage.hrl").
 
@@ -41,7 +42,7 @@ allowed_methods(Req, State) ->
 	{[<<"GET">>], Req, State}.
 
 content_types_provided(Req, State) ->
-	{[{{'_', '*'}, send_body}], Req, State}.
+	{[{<<"*/*">>, send_body}], Req, State}.
 
 known_methods(Req, State) ->
 	{[<<"GET">>], Req, State}.
@@ -55,6 +56,12 @@ resource_exists(Req, State) ->
 		_ -> {false, Req, []}
 	end.
 
+previously_existed(Req, _State) ->
+	{false, Req, []}.
+
+moved_permanently(Req, State) ->
+	{false, Req, State}.
+
 send_body(Req, Record) ->
 	{Record#object.value, Req, '_'}.