Add documentation for the QtWebChannel module.

Please proof-read it and tell me what needs to be improved. I assume
most people will probably not use the QWebChannel directly. Rather, they
will only consume its features indirectly through the integration in
QtWebKit/QtWebEngine. Thus the documentation here is for QWebChannel as
a library. User-end documentation should be added to QtWebKit, I think.

Change-Id: I259c204e24331271b8dc74ea11695988234a79d3
Reviewed-by: Jerome Pasion <jerome.pasion@digia.com>

1 files changed, 47 insertions, 0 deletions

diff --git a/src/webchannel/doc/src/index.qdoc b/src/webchannel/doc/src/index.qdoc
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+/****************************************************************************
+**
+** Copyright (C) 2014 Klarälvdalens Datakonsult AB, a KDAB Group company, info@kdab.com, author Milian Wolff <milian.wolff@kdab.com>
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the documentation of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:FDL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Digia.  For licensing terms and
+** conditions see http://qt.digia.com/licensing.  For further information
+** use the contact form at http://qt.digia.com/contact-us.
+**
+** GNU Free Documentation License Usage
+** Alternatively, this file may be used under the terms of the GNU Free
+** Documentation License version 1.3 as published by the Free Software
+** Foundation and appearing in the file included in the packaging of
+** this file.  Please review the following information to ensure
+** the GNU Free Documentation License version 1.3 requirements
+** will be met: http://www.gnu.org/copyleft/fdl.html.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+/*!
+    \page qtwebchannel-index.html
+    \since 5.4
+    \title Qt WebChannel
+    \brief Bridges the gap between C++/QML and HTML/JavaScript.
+
+    The Qt WebChannel module provides a library for seamless integration of C++/QML applications
+    with HTML/JavaScript clients. Any QObject can be published to remote clients, where its public
+    API becomes available.
+
+    \section1 Related Information
+
+    For more information on how to use this module, please refer to the following pages:
+
+    \list
+    \li \l{Qt WebChannel C++ Classes} explains QWebChannel C++ API.
+    \li \l{Qt WebChannel QML Types} explains the WebChannel QML API.
+    \li The \l{Qt WebChannel Examples} show how use the API in practice.
+    \endlist
+*/