DESCRIPTION
With the new release you can use the Alt + B shortcut in the character builder to show a new panel in the Additional Content tab.
This will allow you to add the index files from the main respository and community driven content with 1 click. (or pick one from the selection box under the url textbox)
There is no button available yet for the new D&D Wiki index but you can select it from the selection box. The next update will include that button.