Revert "Delete index.html"

This reverts commit 496aad36b17b5a5be3292c7f563d785c2e4d073b.
Revert "Merge remote-tracking branch 'origin/source'"

This reverts commit 30067ac5bae8365b9ee26ad59c9b381f28992979, reversing
changes made to 8f126501a34831e12ac9759fc1f4bded48c0f5c7.