Updated Wiki: Demo application

The HTML Renderer Demo application has three roles:
1. Showcase the HTML Renderer capabilities with build in htmls.
2. Explore and test HTML Renderer capabilities by editing html text and seeing the rendering immediately.
3. Development tool for HTML Renderer.

Showcase HTML renderer capabilities

Figure 1: See showcase examples in the tree to the left (Intro, History, Text, Tables, Links, etc.)

Edit html directly in editor and see the renderer refresh

Figure 2: Added color="red" attribute and see the rendered html updates

See the different WinForms controls support using "Sample Form"

Figure 3: Open "Sample Form" to see the HtmlLabel control in-action.

See the ToolTip

Figure 4: HTML ToolTip shown.