The point that the article makes is that OddMuse makes a horrible project hosting system. It's easy enough to store a link to github, or bitbucket, or gitorious (and in all reality, they all speak git, so it's just another remote) as the official project location in whatever new wiki-system emerges.
So in order to "support github and bitbucket" you have to keep copies of your project at both sites? That makes less sense than the original post. The OP uses and when including bitbucket the only way your explanation of "support github" makes sense is with "or bitbucket."