coqdev.el: add installation instructions.
coqdev.el: add installation instructions.

SkySkimmer/coq,Matafou/coq,letouzey/coq-wip,JasonGross/coq,maximedenes/coq,Matafou/coq,silene/coq,coq/coq,maximedenes/coq,ppedrot/coq,ppedrot/coq,coq/coq,gares/coq,ppedrot/coq,ejgallego/coq,ppedrot/coq,letouzey/coq-wip,maximedenes/coq,JasonGross/coq,ejgallego/coq,maximedenes/coq,ejgallego/coq,SkySkimmer/coq,maximedenes/coq,Zimmi48/coq,SkySkimmer/coq,gares/coq,gares/coq,letouzey/coq-wip,Zimmi48/coq,ppedrot/coq,coq/coq,coq/coq,JasonGross/coq,Zimmi48/coq,letouzey/coq-wip,letouzey/coq-wip,gares/coq,Matafou/coq,JasonGross/coq,silene/coq,gares/coq,silene/coq,SkySkimmer/coq,Zimmi48/coq,ejgallego/coq