Add comments and run "cabal install" only if we had to jump to the correct tag
Add comments and run "cabal install" only if we had to jump to the correct tag

rtorr/elm-platform,jvoigtlaender/elm-platform,jonathanperret/elm-platform,mseri/elm-platform,cored/elm-platform,jvoigtlaender/elm-platform,wskplho/elm-platform