http://qiita.com/HirofumiTamori/items/602d9b326cb4816c2fe6 のソースを今でも動くように改良(2015/08/29)

vercheckex.ex

defmodule VercheckEx do
  # requireで使用するライブラリを指定
  require HTTPoison
  require Floki
  require Timex
  use Timex
  def fetch_content(url, type) do
    ret = HTTPoison.get!( url ) # urlで指定されるページのデータを取得
    %HTTPoison.Response{status_code: 200, body: body} = ret
    # HTML bodyを取得する
    # HTMLパーザー Flokiで処理
    # 名前、リリース日時を取得
    {_,_,n} = Floki.find(body, "[itemprop=title]") |> List.first
    {_, date} = Floki.find(body, "time") |> Floki.attribute("datetime")
                                      |> List.first
                                      |> Timex.DateFormat.parse("{ISOz}")

    if(type == :type1) do # バージョン番号を取得
      {_,_,x} = Floki.find(body, ".tag-name span") |> List.first
    else
      {_,_,x} = Floki.find(body, ".css-truncate-target span") |> List.first
    end
    #UTC時刻をJSTに変更
    date |> DateConvert.to_erlang_datetime
         |> Timex.Date.from "Asia/Tokyo"
    {hd(n),hd(x),date} # 戻り値はタプル
  end

  def put_a_formatted_line(val) do # 1行出力
    {title, ver, date} = val
    l = title
    if String.length(title) < 8 do
      l = l <> "\t"
    end
    l = l <> "\t" <> ver
    if String.length(ver) < 8 do
      l = l <> "\t"
    end
    l = l <> "\t" <> Timex.DateFormat.format!(date, "%Y.%m.%d", :strftime)
    now = Timex.Date.now("JST")
    diff =  Timex.Date.diff( date, now, :days) # リリースから今日までの日数
    if diff < 14 do # 14日以内なら警告する。以前の仕事が2週間スプリントだった名残り。
      l = l <> "\t<<<<< updated at " <> Integer.to_string(diff) <> " day(s) ago."
    end
    IO.puts(l)
  end
end
urls = [
  {"https://github.com/jquery/jquery/releases", :type1},
  {"https://github.com/angular/angular/releases", :type1},
  {"https://github.com/facebook/react/releases", :type2},
  {"https://github.com/PuerkitoBio/goquery/releases", :type1},
  {"https://github.com/revel/revel/releases", :type2},
  {"https://github.com/lhorie/mithril.js/releases", :type1},
  {"https://github.com/riot/riot/releases", :type1},
  {"https://github.com/atom/atom/releases", :type2},
  {"https://github.com/Microsoft/TypeScript/releases", :type2},
  {"https://github.com/docker/docker/releases", :type1},
  {"https://github.com/JuliaLang/julia/releases", :type2},
  {"https://github.com/nim-lang/Nim/releases", :type1},
  {"https://github.com/elixir-lang/elixir/releases", :type2},
  {"https://github.com/philss/floki/releases", :type1},
  {"https://github.com/takscape/elixir-array/releases", :type2},
]

# 逐次呼出し→結果出力                                                                                                                                         HTTPoison.start
Enum.each(urls, fn(i) ->
  {u,t} = i
  res  = VercheckEx.fetch_content(u,t)
  VercheckEx.put_a_formatted_line res
end)

実行結果

 mix run vercheckex
jquery          3.0.0-alpha1    2015.07.13
angular         2.0.0-alpha.35  2015.08.18      <<<<< updated at 11 day(s) ago.
facebook        v0.13.3         2015.08.03
PuerkitoBio     v0.3.2          2013.09.07
revel           v0.12.0         2015.03.25
lhorie          v0.1.34         2015.05.01
riot            v2.2.4          2015.08.12
atom            v1.0.9          2015.08.28      <<<<< updated at 1 day(s) ago.
Microsoft       v1.5.4          2015.07.15
docker          v1.8.0-rc2      2015.08.13
JuliaLang       v0.3.11         2015.07.27
nim-lang        v0.11.2         2015.05.04
elixir-lang     v1.0.5          2015.06.29
philss          v0.3.3          2015.08.23      <<<<< updated at 6 day(s) ago.
takscape        1.0.1           2014.09.23

実行環境はubuntu14.04です。