Update copyright files

COPYRIGHT

@@ -19,6 +19,7 @@ GeoIP			  2004      LGPL-2.1+                   Yes             Sample code to m
 NuSoap            0.9.5		LGPL 2.1+					Yes				Library to develop SOAP Web services (not into rpm and deb package)
 OdtPHP            1.0.1		GPL-2+						Yes				Library to build/edit ODT files
 PHPExcel		  1.7.6		LGPL-2.1+					Yes				Read/Write XLS files, read ODS files
+PHPPrintIPP		  1.3       GPL-2+						Yes				Library to send print IPP requests
 TCPDF             5.9.180	LGPL-3+						Yes				PDF generation
 
 JS libraries:
@@ -50,10 +51,12 @@ Copyright
 Copyright (C) 2013
 - Christophe Battarel <christophe.battarel@altairis.fr>
 - Laurent Destailleur <eldy@users.sourceforge.net>
+- Jean-François Ferry <jfefe@aternatik.fr>
 - Marcos García <marcosgdf@gmail.com>
 - Philippe Grand <philippe.grand@atoo-net.com>
 - Florian Henry <florian.henry@open-concept.pro>
 - Regis Houssin	<regis.houssin@capnetworks.com>
+- Maxime Kohlhaas <mko@atm-consulting.fr>
 - Juanjo Menent <jmenent@2byte.es>
 
 Copyright (C) 2012