Updated ToC in Readme.

Author: n1k0

README.md

@@ -35,9 +35,9 @@ A [live playground](https://mozilla-services.github.io/react-jsonschema-form/) i
  - [File widget input ref](#file-widget-input-ref)
  - [Object fields ordering](#object-fields-ordering)
  - [Array item options](#array-item-options)
- - [Orderable option](#orderable-option)
- - [Addable option](#addable-option)
- - [Removable option](#removable-option)
+ - [orderable option](#orderable-option)
+ - [addable option](#addable-option)
+ - [removable option](#removable-option)
  - [Custom CSS class names](#custom-css-class-names)
  - [Custom labels for enum fields](#custom-labels-for-enum-fields)
  - [Multiple choices list](#multiple-choices-list)
@@ -59,7 +59,7 @@ A [live playground](https://mozilla-services.github.io/react-jsonschema-form/) i
  - [The formContext object](#the-formcontext-object)
  - [Custom array field buttons](#custom-array-field-buttons)
  - [Custom SchemaField](#custom-schemafield)
- - [Customizing the fields and widgets](#customizing-the-default-fields-and-widgets)
+ - [Customizing the default fields and widgets](#customizing-the-default-fields-and-widgets)
  - [Custom titles](#custom-titles)
  - [Custom descriptions](#custom-descriptions)
  - [Form data validation](#form-data-validation)