Update index.html

Clarified the date format (i.e. now it is clear from the documentation which part is day and which part is month).
Merge pull request #97 from arein/master

Update index.html to have a more obvious date format (month vs day)
Revert "Update index.html"

This reverts commit ccb4f17f00537a6511fa8174f5096d9d27fe4c54.
Update date format in docs