Revert "multi-scroll wheel direction enabled by default, README updated"

This reverts commit a7a1f8d594ef9339cbbb03d244caf2dfa6dee558.
Revert "Revert "multi-scroll wheel direction enabled by default, README updated""

This reverts commit 3c1291515eab24125b5b21fcc74ad792c14684be.
Merge branch 'master' of github.com:zachflower/Overscroll