[Therion] Therion Features Wiki page

Thanks to whoever put together the wiki page summarising Therions general features. http://therion.speleo.sk/wiki/doku.php?id=skillen One of the biggest challenges I had getting started was figuring out exactly what it could do and which features applied to precisely what outputs. I figured many out by trial and error, however I still have uncertainties in this regard after using it for two years. At last this concise summary cleared a few more of these up, at least with regard to the authors' intentions. Good work and thanks. Bruce