Find Ruby: where ruby

Gems are at: Ruby\lib\ruby\gems\version\gems\

Open jekyll-tagging-1.1.0\lib\jekyll\tagging.rb

Find

data = { 'layout' => layout, 'posts' => posts.sort.reverse!, 'tag' => tag }

and change it to something like:

data = { 'layout' => layout, 'posts' => posts.sort.reverse!, 'tag' => tag, 'title' => 'Posts about' + ' ' + tag }

You can add or change other page setting like this. For example I needed to remove lang value for multilang site and did it like this: 'lang' => ''.