Fix rebar default requirements
Fix rebar default requirements

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