Fix validation usage examples
Merge pull request #1055 from majna/3.0

Fix validation usage examples
Add missing commas to array in query builder
Fix array commas in table objects
Comment out '...' in examples in request response
Fix missing comma in array in table objects
Remove extra line from table objects example
Fixed model name to plural form in example code.
Add docs for getting an 'afterFind' method.
Merge pull request #1062 from cakephp/3.0-afterfind

Add docs for getting an 'afterFind' method.
Fix sentence spacing in migration new orm
Basic edits to ORM migration