Change link to accept variadic params

Just reads better and writing 'id' => $id is sad.
Remove return on GET and render this
Update version in README.md
Return return on head method
Add NEWS.md and $instance

Plus some refactoring
Change $instance to $this in views
Fix $instance to $this in README.md
Fix match to return urldecoded pattern variables
Fix scrutinizer 'error' undeclared issue