Maximize window by default

max.diff

diff --git a/src/client/renderingengine.cpp b/src/client/renderingengine.cpp
index a58b0efe6..1aebaa4e0 100644
--- a/src/client/renderingengine.cpp
+++ b/src/client/renderingengine.cpp
@@ -146,6 +146,7 @@ RenderingEngine::RenderingEngine(IEventReceiver *receiver)
        auto skin = createSkin(m_device->getGUIEnvironment(),
                        gui::EGST_WINDOWS_METALLIC, driver);
        m_device->getGUIEnvironment()->setSkin(skin);
+       m_device->maximizeWindow();
        skin->drop();
 }