DOC: README.md include restore with booleans advice
DOC: README.md include restore with booleans advice

Include instruction on how to revert booleans to their defaults
as well as colours.

Triggered by comment from user Initial Conditions
http://mathworks.com/matlabcentral/profile/authors/2537985-initial-conditions
on FileExchange.

scottclowe/matlab-schemer,scottclowe/matlab-schemer,scottclowe/matlab-schemer,scottclowe/matlab-schemer