Updated readme and changelog [ci skip]

Author: timothymarois

CHANGELOG.md

@@ -4,6 +4,7 @@ Change Log
 ### 02/23/2019 - 1.0.22
 * Merged [Pull Request](https://github.com/filebase/Filebase/pull/47) for deleting items with a custom filter. (this adds the `delete()` method on queries.)
 * Merged [Pull Request](https://github.com/filebase/Filebase/pull/48) for calling to the Query methods directly on the database class.
+* Merged [Pull Request](https://github.com/filebase/Filebase/pull/45) for sorting by update/created at times (ability to fetch `__created_at` and `__updated_at`)
 
 ### 12/26/2018 - 1.0.21
 * Merged [Pull Request](https://github.com/filebase/Filebase/pull/30) for YAML format.

README.md

@@ -388,6 +388,11 @@ $db->where('name','LIKE','john')->delete(function($item){
     return ($item->name == 'John' && $item->email == 'some@mail.com');
 });
 
+
+// ability to sort the results by created at or updated at times
+$documents = $db->orderBy('__created_at', 'DESC')->results();
+$documents = $db->orderBy('__updated_at', 'DESC')->results();
+
 ```
 
 To run the query use `results()` or if you only want to return the first item use `first()`