Add a system to write guide pages

[kylef]

Would be super awesome to allow us to write guides for our apps or certain functionality. Such as a ZNC with Palaver guide.

AgileBits have done this well, here is some examples: http://help.agilebits.com/1Password3/software_licenses.html
http://help.agilebits.com/1Password3/flash_websites.html

Perhaps it could just be similar to the FAQ page

/cc @iamDecode