the kernel needs "swapaccount=1" set - some docs are updated, this one seems to have slipped through

Fixes #952
Update README.md
Update AUTHORS
Merge pull request #972 from titanous/update-authors

Update AUTHORS
Merge pull request #965 from freegenie/patch-1

* Documentation: use sudo for quick install script
Merge pull request #953 from rhysh/952-swapaccount-docs

- Documentation: fix inconsistent/outdated instructions for setting up "swapaccount"