Examples are here: http://getbootstrap.com/examples/grid/ So to center the logo (horizontally) in the module zone, I guess it could have "col-md-2 col-md-offset-5".
info.tiki.org just lists Tiki itself. Maybe you should check http://suite.tiki.org/Tiki+Suite+Install about Tiki Suite (Tiki plus other OS and other applications).