update doc
update doc

kollix/qxmpp,trulabs/qxmpp-old,pol51/QXMPP-CMake,deepak899/qxmpp,olesalscheider/qxmpp,gotomypc/qxmpp,KangLin/qxmpp,KangLin/qxmpp,trulabs/qxmpp-old,olesalscheider/qxmpp,Ilyatk/qxmpp,Kaffeine/qxmpp,gamenet/qxmpp,cccco/qxmpp,pol51/QXMPP-CMake,gamenet/qxmpp,olesalscheider/qxmpp,unisontech/qxmpp,LightZam/qxmpp,trulabs/qxmpp-old,gotomypc/qxmpp,deepak899/qxmpp,deepak899/qxmpp,gamenet/qxmpp,gamenet/qxmpp_old,ycsoft/qxmpp,pol51/QXMPP-CMake,projedi/qxmpp-ffmpeg,Ilyatk/qxmpp,KangLin/qxmpp,kollix/qxmpp,cccco/qxmpp,gotomypc/qxmpp,ycsoft/qxmpp,kollix/qxmpp,cccco/qxmpp,LightZam/qxmpp,Kaffeine/qxmpp,LightZam/qxmpp,Kaffeine/qxmpp,unisontech/qxmpp,ycsoft/qxmpp,Ilyatk/qxmpp,gamenet/qxmpp_old,projedi/qxmpp-ffmpeg,unisontech/qxmpp,gamenet/qxmpp_old