misc: README cleaning + added Mutagen to credits

README

@@ -66,37 +66,6 @@ There will probably be a wiki doc in the future.
 You can find Primitivus shortcuts on the wiki: 
 http://wiki.goffi.org/wiki/Primitivus
 
--- Shortcuts for Primitivus (temporary):
-C stands for "Ctrl"
-M stands for Meta wich is usually the "Alt" key
-S stands for "Shift"
-
-##GENERAL##
-[tab] and/or arrows: change focus
-C-x: Quit
-M-m: (un)hide menu
-C-n: see next notification
-C-s: temporarly (un)hide popup window
-F2: (un)hide the contact list
-
-##CHAT WINDOW##
-M-p: (un)hide presents panel in group chat
-M-t: (un)hide timestamp
-M-n: (not) use short nicks
-M-l: (un)hide window's decoration
-M-s: change apperance of subject, switch between:
-	- one line (subject is clipped if too long)
-	- full subject displayed
-	- subject hidden
-
-##EDITION ZONE##
-C-a or [home]: place the cursor at the begining of the line
-C-e or [end]: place the cursor at the end of the line
-C-k: kill (delete) everything at the right of the cursor
-C-w: delete the last word
-S-[tab]: Do context completion
-
-Note that the mouse can be used
 --
 
 SàT is the acronym (yes another one :( ) in tribute to the song Salut à Toi from the Bérurier Noir band. I recommand also the excelent cover from Les Ogres de Barback.
@@ -143,6 +112,9 @@ SàT core and Libervia use pyfeed and xe (http://www.blarg.net/%7Esteveha/), 2 l
 txJSON-RPC:
 Libervia use txJSON-RPC (https://launchpad.net/txjsonrpc), a twisted library to communicate with the browser's javascript throught JSON-RPC
 
+Mutagen:
+Mutagen (https://code.google.com/p/mutagen/) is an audio metadata handling library, it's use by the radiocol plugin.
+
 pictures found in frontends/src/wix/images/crystal/:
 These pictures come from Crystal clear, were made by Everaldo Coelho (www.everaldo.com) and YellowIcon (www.yellowicon.com). They are under LGPL V3 licence (see frontends/src/wix/images/COPYING.LESSER).
 Found on http://commons.wikimedia.org/wiki/File:Crystal_Clear_app_browser.png and http://commons.wikimedia.org/wiki/File:Crystal_Clear_app_cache.png