Fix misspelled Hawkings -> Hawking, Archimede -> Archimedes, Euclide -> Euclid

Docker-DCO-1.0-Signed-off-by: Cory Forsyth <cory.forsyth@gmail.com> (github: bantic)
Removed the 5th clause

Removed clause which states contributions should be relicensed
Fix layout
Bump DCO version
Update Travis to check for new 1.1 DCO version

Docker-DCO-1.1-Signed-off-by: Andrew Page <admwiggin@gmail.com> (github: tianon)
Update DCO git hook example
Merge pull request #3522 from bantic/fix-misspelled-names

Fix misspelled Hawkings -> Hawking, Archimede -> Archimedes, Euclide -> Euclid
Merge pull request #3527 from keeb/add-dco

Amend DCO
Merge pull request #3528 from tianon/update-travis-dco

Update Travis to check for new 1.1 DCO version
Merge pull request #3530 from creack/update_dco_doc

Update DCO git hook example