Remove <<- and update examples.
Remove <<- and update examples.

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