app.config support

[richardsondev]

<configuration>
  <configSections>
    <sectionGroup name="pageAppearanceGroup">
      <section 
        name="pageAppearance" 
        type="Samples.AspNet.PageAppearanceSection" 
        allowLocation="true" 
        allowDefinition="Everywhere"
      />
    </sectionGroup>
  </configSections>
</configuration>