Sorry for the lack of news !!!
My personal life was overwhelming and 24 hours in my life was not enought but the project is not dead.
I will coming soon with an update version with more tile and expect to be able to save your map on the website.
For now, i install the Mapviewer to see scirra/json map from the website, local file or copy/paste json code.
I also add Fullscreen link at the top of tile2map editor.
See you soon !