pdf版を生成できるように

Squashed commit of the following:

commit 3a47bccf9eec6e0524a84ece7b414bc813923065
Author: Tomohiko Himura <eiel.hal@gmail.com>
Date:   Thu Sep 4 20:44:10 2014 +0900

    やったーできたー。

commit 980ffe11c2838618f6208342db54d9592621979b
Author: Tomohiko Himura <eiel.hal@gmail.com>
Date:   Thu Sep 4 20:26:23 2014 +0900

    root 権限…

commit 81d51a05cdb185e2c8c337d1a2b49e8253ea82a5
Author: Tomohiko Himura <eiel.hal@gmail.com>
Date:   Thu Sep 4 20:22:53 2014 +0900

    source.list の追加

commit 3fbc041f3200b1fbe07b10a94fc1d90d03dbdf89
Author: Tomohiko Himura <eiel.hal@gmail.com>
Date:   Thu Sep 4 20:14:33 2014 +0900

    リポジトリ名修正

commit 8c24e05e276de04cfb94d334c9361a1429706abb
Author: Tomohiko Himura <eiel.hal@gmail.com>
Date:   Thu Sep 4 20:12:10 2014 +0900

    add-apt-rpository だった

commit 8296d832e6a87c2c77f6708702941634db301167
Author: Tomohiko Himura <eiel.hal@gmail.com>
Date:   Thu Sep 4 20:09:58 2014 +0900

    12.02 で再挑戦

commit 0d7b2497f85e71c214e858a0712557dc3ed41795
Author: Tomohiko Himura <eiel.hal@gmail.com>
Date:   Thu Sep 4 20:04:32 2014 +0900

    そろそろつらい。

commit e0aafef21d333dbe317f3b2232434fa5b385d1dc
Author: Tomohiko Himura <eiel.hal@gmail.com>
Date:   Thu Sep 4 19:57:46 2014 +0900

    texlive をインストールするために universe を追加してみる

commit a7fc62635ca79c194e38fd3ac4f9093dab893579
Author: Tomohiko Himura <eiel.hal@gmail.com>
Date:   Thu Sep 4 19:35:39 2014 +0900

    rvm のインストール

commit 80b991e17dc0d6d570b9ecc9191ee53f39c8ab64
Author: Tomohiko Himura <eiel.hal@gmail.com>
Date:   Thu Sep 4 19:21:02 2014 +0900

    remove rvm-use

commit 26dd6118d12f9141fb3be62171fdf17b55980cba
Author: Tomohiko Himura <eiel.hal@gmail.com>
Date:   Thu Sep 4 19:13:08 2014 +0900

    ubunutu 14.04にしてみよう

commit 577dab8fbad965a0cb773fa1385457e812507e99
Author: Tomohiko Himura <eiel.hal@gmail.com>
Date:   Thu Sep 4 18:22:57 2014 +0900

    そもそもデフォのじゃダメなん?

commit 65448f24f8a782cb52daf4aa379b9c741f453914
Author: Tomohiko Himura <eiel.hal@gmail.com>
Date:   Thu Sep 4 18:10:18 2014 +0900

    sudo があるとダメなのかしら

commit 36cc00e28c8a838daef792aec40ebbde2e2c2d32
Author: Tomohiko Himura <eiel.hal@gmail.com>
Date:   Thu Sep 4 17:56:38 2014 +0900

    install software-properties-common

commit 61b20ffbdf6ada325b3cc530c69e4bccdbd92b8f
Author: Tomohiko Himura <eiel.hal@gmail.com>
Date:   Thu Sep 4 17:43:42 2014 +0900

    仕方ないのでひとつひとつ指定してみる

commit acffbca6a9a1799a457ef34597a990859ec87c0f
Author: Tomohiko Himura <eiel.hal@gmail.com>
Date:   Thu Sep 4 17:31:04 2014 +0900

    step instnall tex が実行されてない感2

commit ecd3a81a3b1f78d4b039864b0bf4397b695c9a3b
Author: Tomohiko Himura <eiel.hal@gmail.com>
Date:   Thu Sep 4 17:24:17 2014 +0900

    install tex step が動いてなさげ

commit 1dfdfbd77e4b80e65d2072138635b34733c86fa6
Author: Tomohiko Himura <eiel.hal@gmail.com>
Date:   Thu Sep 4 17:18:31 2014 +0900

    wercker/rvm にもどしてみる

commit ecb7ec6e7d9ee3ad7b4e41b7d062c1bcd755eb84
Author: Tomohiko Himura <eiel.hal@gmail.com>
Date:   Thu Sep 4 17:06:49 2014 +0900

    bundle exec から rakeを起動するように変更

commit 65ba03dd10ed0849c03b64e8d661c223a33b53f1
Author: Tomohiko Himura <eiel.hal@gmail.com>
Date:   Thu Sep 4 15:54:02 2014 +0900

    pdf の作成

     #3