Improve organization of documentation a bit
Improve organization of documentation a bit

rgrempel/core,alexiamcdonald/elm-core,martinos/core,simonh1000/core,ThomasWeiser/core,Pisys/core,rgrempel/core,alexiamcdonald/elm-core,martinos/core,ThomasWeiser/core,Pisys/core,simonh1000/core