Update README.
Update README.

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