[IPOL discuss] Link to the "IPOL Demo Programming Guidelines"

[Miguel Colom]

Dear all,
the "Editor checklist" in the IPOL Wiki contains instructions for the  
editors to check both the demo and and manuscript.

These instructions are easy to find, but the detailed instructions to  
verify the demos are at  
https://tools.ipol.im/wiki/doc/demo/guidelines/ and it's not evident  
at all for the editors that thery should look there to find them.

I propose to add a link from the first page to the detailed  
instructions, if you all agree.

Best,
Miguel