Add parsing of WikiBox

[Shiftas]

Implementation of wiki box parser.
Only for works for evaluated pages.

Feel free to decline it if you feel it is too incomplete to be added, as not all fields from wiki box is parsed and I do not have tests for this.

[gsouf]

Hi, I'll review this asap

[gsouf]

Thanks for the contribution it's very appreciated.

I need to think about it, because I'm not sure if wiki parser support is very helpful for the moment because it will add a lot of maintenance for a side part of the library. The main goal is to parse natural result, and as a second goal adwords result, I still need some work to make that stable.

Well, we could offer it as a plugin, or leave it in development stage in its own branch until I feel it's ok to merge it. I need to think for the best solution. In any cases I have a lot of improvement and a few refactoring to bring before.

What is your use case of the wikiboxes?

[Shiftas]

Well, i need to get info out of it, like title, description, map details etc. I later use them for some data processing. And as I said, its just a suggestion, so if you feel it does not belong here, just reject it. I have already implemented it outside of this library, as it is quite easy to extend without actually changing it.

[thebennos]

detecting of wikiboxes would be nice.
+1 for this pull request.