Update termtter to 2.2.1.

== 2.2.1 / 2013-05-20

* Fix package problem (termtter requires termtter).

* Suppress the warning on ruby 1.9 with CentOS.

== 2.2.0 / 2013-04-20

* Using https to connect to api.twitter.com (important).

* Improvement testing (CI enabled).

* Using jeweler for packaging.

* Suppress the warning (on ruby 2.0).

* Change default stdout and colors.

* Added some plugins

== 2.1.1 / 2013-04-10

* Correspond to API 1.1

* Other fixes.

== 2.0.0 / 2013-04-07

* User own plugins loader.

  * If ~/.termtter/lib/plugins exist, load them.

* Improvement easy_post plugin.

  * Plug-in easy_post should operate only when above 15 characters.

* Improvement tests.

* "Failed to update :(" when updated with URL.

* use String#sub instead of String#[regexp]=.

* spec for expand_tco_url plugin.

* and fix other minor bugs.

(obache)