Update layer README for Fido
Update layer README for Fido

Signed-off-by: Ash Charles <80cee6ff557ba1c5981cd5d98755c09f634abbac@gmail.com>

gumstix/meta-gumstix,scottellis/meta-gumstix,scottellis/meta-gumstix,gumstix/meta-gumstix,gumstix/meta-gumstix