Add translators credit.

src/modules/welcome/WelcomePage.cpp

@@ -75,7 +75,9 @@ WelcomePage::WelcomePage( RequirementsChecker* requirementsChecker, QWidget* par
                             "for %3</strong><br/><br/>"
                             "Copyright 2014-2015 Teo Mrnjavac &lt;teo@kde.org&gt;<br/>"
                             "Thanks to: Anke Boersma, Aurélien Gâteau, Kevin Kofler, Philip Müller, "
-                            "Pier Luigi Fiorini and Rohan Garg.<br/><br/>"
+                            "Pier Luigi Fiorini, Rohan Garg and the <a "
+                            "href=\"https://www.transifex.com/calamares/calamares/\">Calamares "
+                            "translators team</a>.<br/><br/>"
                             "<a href=\"http://calamares.io/\">Calamares</a> "
                             "development is sponsored by <br/>"
                             "<a href=\"http://www.blue-systems.com/\">Blue Systems</a> - "