Clarify include_erts option
Clarify include_erts option

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