explicitly state that Qt 5.x is supported
explicitly state that Qt 5.x is supported

cccco/qxmpp,cccco/qxmpp,KangLin/qxmpp,kollix/qxmpp,gotomypc/qxmpp,olesalscheider/qxmpp,ycsoft/qxmpp,Ilyatk/qxmpp,Ilyatk/qxmpp,gamenet/qxmpp,kollix/qxmpp,gotomypc/qxmpp,olesalscheider/qxmpp,pol51/QXMPP-CMake,cccco/qxmpp,LightZam/qxmpp,KangLin/qxmpp,LightZam/qxmpp,pol51/QXMPP-CMake,LightZam/qxmpp,olesalscheider/qxmpp,pol51/QXMPP-CMake,Ilyatk/qxmpp,deepak899/qxmpp,deepak899/qxmpp,kollix/qxmpp,gamenet/qxmpp,KangLin/qxmpp,gamenet/qxmpp,Kaffeine/qxmpp,Kaffeine/qxmpp,ycsoft/qxmpp,ycsoft/qxmpp,deepak899/qxmpp,gotomypc/qxmpp,Kaffeine/qxmpp