Update Controllers.md

"... whenever it receives POST __a__ request to ..." 
changed to
 "... whenever it receives __a__ POST request to ..."
Merge pull request #218 from jub3i/patch-2

Update Controllers.md
Model documentation cleanup (and model settings.)
Intro to model methods.
Screenshot
Added note about asynchronousness.
More model doc cleanup
More model doc cleanup
Added unique to the list
Added model settings reference table under sails.config.models.
Rename sails.config.models to sails.config.models.md
Update Models.md
Update ORM.md
Update ORM.md
Update models.md
Update Models.md
Update sails.config.models.md
Merge pull request #219 from JemiloII/patch-8

Added unique to the list
Update ORM.md

typo: "thwe" --> "the"
Merge pull request #221 from jub3i/patch-3

Update ORM.md