Create an automatically numbered list in Markdown format

That should happen automatically (at least in SO flavored MD):

1. test 1
2. test 2

The code I used it:

1. test 1
1. test 2

The same works for GitHub flavored MD: https://gist.github.com/3489721

You can test it here: https://meta.stackexchange.com/questions/3122/formatting-sandbox