README.md in ine-places-0.1.4 vs README.md in ine-places-0.1.5

@@ -181,10 +181,11 @@
 You could hydratate the model `INE::Places::Place` using the `.hydrate` function:
 
 ```ruby
 INE::Places.hydratate INE::Places::Place, 'spec/fixtures/happiness.csv', id_column: 'municipio',
                                                                          as: :happiness,
-                                                                         value_column: 'value'
+                                                                         value_column: 'value',
+                                                                         convert_to: :float
 ```
 
 You just need to provide:
 
 - id column, to match the IDs