fork this repository "you need a account to do that"
to use add the file for your flash game
then copy the name of it
next go into the index.html and where it says src=" add the name of your flash game " delete the text and paste the name
then you save it and your done
also dont change the name of the index.html or the name for the file of your flash game because it may break it
and when your done you can delete this README.md