Reverted documentation to reflect Sergey as the primary owner now that my earlier pull request was merged

Hey there Sergey,

My sincerest apologies, but the last commit in my version wasn't intended to be part of the pull request as I had added myself as the maintainer of the fork.

Now that you've accepted my big pull request, I've just reverted the changes to reflect you as the correct owner in the README.md and Modulefile files.

Cheers mate :)
Fotis