Reverted to standard Erlang and Elixir installation procedure
Reverted to standard Erlang and Elixir installation procedure

The problems installing Erlang and Elixir in earlier Ubuntu 16.04
versions seem to have been resolved. Revert to the Ubuntu instructions
at http://elixir-lang.org/install.html that now seem to work flawlessly
again.

rudolfb/ubuntu-xenial-elixir-install-shell-script