Advertise doc for master branch in README.
Advertise doc for master branch in README.

Matafou/coq,gares/coq,Zimmi48/coq,JasonGross/coq,coq/coq,gares/coq,Zimmi48/coq,SkySkimmer/coq,coq/coq,ejgallego/coq,JasonGross/coq,JasonGross/coq,gares/coq,ejgallego/coq,coq/coq,Matafou/coq,coq/coq,gares/coq,SkySkimmer/coq,silene/coq,gares/coq,silene/coq,JasonGross/coq,ejgallego/coq,SkySkimmer/coq,Matafou/coq,Zimmi48/coq,silene/coq,SkySkimmer/coq,ejgallego/coq,Zimmi48/coq