refuge_spatial: the spatial extension of refuge

[Benoit Chesneau]

Hi,

Just a quick mail about the extension refuge_spatial shipped with
refuge. New features have been added:

- skip: allows you to start to return the results at a certain offset.
- limit: limits the number of results returned

While I was here I also put the documentation on the wiki:

https://github.com/refuge/rcouch/wiki/Refuge-Spatial

Feel free to ask for more questions.


Enjoy!

- benoît