Log Message:
www/ruby-pygments.rb: pdate to 1.2.1

Version 1.2.1 (2017/12/07)
-----------------------------

* Automatically update `lexers` cache on build \ 
[186](https://github.com/tmm1/pygments.rb/pull/186)
  * See [#185](https://github.com/tmm1/pygments.rb/pull/185) for the reason

Version 1.2.0 (2017/09/13)
-----------------------------

* Exclude symlinks from the gem package to solve Windows issues \ 
[#181](https://github.com/tmm1/pygments.rb/pull/181)
* Upgrade pygments to 2.0.0 [#180](https://github.com/tmm1/pygments.rb/pull/180)