Update marionette.configuration.md
Update marionette.configuration.md
Update readme.md

Fixed a “Deferred” typo.
Merge pull request #546 from AlexDeLaCreme/patch-1

Update marionette.configuration.md - fixed typo
Merge pull request #547 from AlexDeLaCreme/patch-2

Update marionette.configuration.md - fixed grammar
Merge pull request #553 from molily/patch-1

Update readme.md
fixed a typo