Add runtime smart search docs.

Author: yajra

documentation.md

@@ -40,6 +40,7 @@
 	- [Filter Column](/docs/laravel-datatables/{{version}}/filter-column)
 	- [Query Builder Extension](/docs/laravel-datatables/{{version}}/query-builder)
 	- [Regex Search](/docs/laravel-datatables/{{version}}/regex)
+	- [Smart Search](/docs/laravel-datatables/{{version}}/smart-search)
 - Sorting/Ordering
 	- [Manual Order](/docs/laravel-datatables/{{version}}/manual-order)
 	- [Order Column](/docs/laravel-datatables/{{version}}/order-column)

smart-search.md

@@ -0,0 +1,16 @@
+# Runtime Smart Search
+
+You can optionally enable/disable Datatables smart search feature by using `smart` api by passing `true` or `false` as the argument.
+Default argument value is `true`.
+
+```php
+use Datatables;
+
+Route::get('user-data', function() {
+	$model = App\User::query();
+
+	return Datatables::eloquent($model)
+					->smart(false)
+					->make(true);
+});
+```