Fixed artifact subfolders support

BuildServer/app.js

@@ -42,7 +42,7 @@ app.get('/manual', routes.manual.get);
 app.post('/manual', routes.manual.post);
 app.get('/status/:owner/:reponame/:branch/:rev?', routes.status.page);
 app.get('/status.svg', routes.status.image);
-app.get('/artifact/:owner/:reponame/:branch/:rev/:file', routes.artifact);
+app.get('/artifact/:owner/:reponame/:branch/:rev/*', routes.artifact);
 
 http.createServer(app).listen(app.get('port'), function(){
   console.log('Express server listening on port ' + app.get('port'));

BuildServer/routes/artifact.js

@@ -7,7 +7,7 @@ module.exports = function(req, res) {
 		branchName: req.params.branch,
 		branch: "/refs/heads/" + req.params.branch,
 		rev: req.params.rev,
-		file: req.params.file
+		file: req.params[0]
 	};
 
 	res.sendfile(req.app.get('releasepath') + "/" + options.owner + "/" + options.reponame + "/" + options.branch + "/" + options.rev + "/" + options.file);