Restructure and add to Kernel.<<>>/2 docs
Restructure and add to Kernel.<<>>/2 docs

lexmag/elixir,elixir-lang/elixir,antipax/elixir,pedrosnk/elixir,pedrosnk/elixir,michalmuskala/elixir,kelvinst/elixir,gfvcastro/elixir,joshprice/elixir,beedub/elixir,ggcampinho/elixir,beedub/elixir,kimshrier/elixir,kimshrier/elixir,kelvinst/elixir,ggcampinho/elixir,lexmag/elixir,antipax/elixir,gfvcastro/elixir