[Freeswitch-docs] Autogenerating Variables docs

[Ryan Harris]

> I suggest a "Type" field that declares whether it's a Boolean, string, numeric type to see that at a glance.
I just added it and will add the "datatypes" to the markup.
> Also, don't forget about Confluence "labels" (tags, really). Those are important to tie together related pages wherever they sit in the ToC tree. There's a pretty good established list at the bottom of
> https://freeswitch.org/confluence/display/FREESWITCH/Confluence+Wiki+Standards+and+Guidelines

Will do! I'll try to do a few more and show a completed non-prototype
version