Adding new features

The method for setting SetRootPath for the name of the folder where the
documentation shows added.
Required to run the route configuration
(Swashbuckle.Bootstrapper.Init(config);) after setting Swashbuckle
(SwaggerSpecConfig.Customize(c =>{ ... }))
Ex: use /panel instead of /swagger

SetCustomizeHtml method which allows to modify the html of index.html
file documentation was added.
Ex: SetCustomizeHtml( html => html.replace( "<body>", "<body
bgcolor=\"#E6E6FA\">" ) )

The method for setting SetIncludeInheritedProperties added to add the
properties of the base classes in the model classes that derive from
another class and can not be configured using the method
PolymorphicType.