README.md in restpack_serializer-0.5.1 vs README.md in restpack_serializer-0.5.2

@@ -55,10 +55,10 @@
   "artist_id": 1,
   "href": "/albums/1"
 }
 ```
 
-`as_json` accepts an optional `context` hash parameter which can be used be your Serializers to customize their output:
+`as_json` accepts an optional `context` hash parameter which can be used by your Serializers to customize their output:
 
 ```ruby
 class AlbumSerializer
   include RestPack::Serializer
   attributes :id, :title, :year, :artist_id, :extras