rebar3/priv/templates/simplelib.app.src

{application, {{libid}},
 [
  {description, "An Erlang {{libid}} library"},
  {vsn, "1"},
  {modules, [
             {{libid}}
            ]},
  {registered, []},
  {applications, [
                  kernel,
                  stdlib
                 ]},
  {env, []}
 ]}.