Updated mediawiki/extensions
Project: mediawiki/extensions/GettingStarted  6ca65103435fbd0f4fa224171cb3efc697a35d56

Update README with better explanation and instructions

This patch expands the README to provide more detailed information about the
features offered by this extension and instructions for setting it u.

Change-Id: I74f7f3fb48c2649c89834b51ef59ed3d164a7483