Fetch summaries from MediaWiki wikis, like Wikipedia

Current version

wiki requires the following formula to be installed:
go 1.9.2 Open source programming language to build simple/reliable/efficient software

Formula history

Dominyk Tiller wiki: install metafiles
ilovezfs wiki: remove conflict with osxutils
Fredrik Wallgren wiki 1.4.0
Mike McQuaid Use hash rockets again. (#5177)
Mike McQuaid Use Ruby 1.9+ symbol hash keys in all formulae. (#4942)
Zhiming Wang wiki: update go_resource indentation style
Miguel Araújo wiki: fix code position (#3652)
Baptiste Fontaine wiki: conflicts with osxutils
Fredrik Wallgren wiki 1.3.0 (new formula)