Github wiki managed by the main repository
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I'd like to manage the GitHub wiki for my project at the same time as I'm developing the code.  For example:

**Branches**

 - master (stable versions)
  - develop (development of next version)
  - Others... (Possible other dev / feature branches)

Ideally, I'd like the wiki to be contained in a subfolder (e.g. /wiki) of the project.  Then when I'm making changes to the code I can also update the wiki as the same time (code + doc change).  It'd also mean that all my development code and documentation would be self contained in the "develop" branch until I merge with the "master" branch.  Hopefully, even if via a manual process, the github wiki would then be updated after the merge with master to reflect the changes.

I've taken a look at Git's submodule feature, but from what I understand that usually points at a single revision.  I'd like to somehow follow my code development so branching and merging would work as normal.

