Update the README with info about generating docs.
Update the README with info about generating docs.

tiago4orion/iolib,shamazmazum/iolib,sionescu/iolib,tiago4orion/iolib,sionescu/iolib,shamazmazum/iolib,lispnik/iolib,dkochmanski/iolib,vsedach/iolib-simple-mux,sionescu/iolib,attila-lendvai/iolib,attila-lendvai/iolib,tiago4orion/iolib,attila-lendvai/iolib,deadtrickster/iolib,deadtrickster/iolib,vsedach/iolib-simple-mux,dkochmanski/iolib,deadtrickster/iolib,lispnik/iolib,shamazmazum/iolib,lispnik/iolib,dkochmanski/iolib