Log message:
Update ruby-rainbow to 2.0.0.

Changelog (per Changelog.md)

## 1.99.2 (2014-01-24)

* bring back ruby 1.8 support

## 2.0.0 (2014-01-24)

* disable string mixin by default

Log message:
Add RUBY_VERSION_SUPPORTED= line since ruby 1.8 support was dropped.

Log message:
Update ruby-rainbow to 1.99.1. Part of PR/48447.

Changelog (per Changelog.md)

## 1.99.0 (2013-12-26)

* preparation for dropping String monkey patching
* `require "rainbow/string"` if you want to use monkey patched String
* introduction of Rainbow() wrapper
* support for MRI 1.8.7, 1.9.2, 1.9.3, 2.0 and 2.1, JRuby and Rubinius
* deprecation of Sickill::Rainbow namespace (use Rainbow.enabled = true instead)

## 1.99.1 (2013-12-28)

* drop support for ruby 1.8
* `require "rainbow/string"` -> `require "rainbow/ext/string"`
* custom rainbow wrapper instances (with separate enabled/disabled state)
* shortcut methods for changing text color (`Rainbow("foo").red`)

Log message:
PR pkg/47791 orignated by tsutsui@  for tw,
CUI client for twitter written by ruby.

 This is actually following set. But just making package on
net/ruby-tw will pull all these prerequisites.

- misc/ruby-args_parser   args_parser-0.1.4
  Parse ARGV from command line with DSL.

- misc/ruby-hashie	hashie-1.2.0
  Hashie is a small collection of tools that make hashes more powerful.
  Currently includes Mash (Mocking Hash) and Dash (Discrete Hash).

- misc/ruby-parallel	parallel-0.6.4
  Ruby gem to run any kind of code in parallel processes.

- misc/ruby-rainbow	rainbow-1.1.4
  Rainbow extends ruby String class enabling coloring text on ANSI terminals.

- net/ruby-tw		 tw-0.3.9
  Ruby based CUI Twitter client.

- net/ruby-twitter	twitter-4.6.2
  A Ruby interface to the Twitter API.

- net/ruby-userstream	userstream-1.3.0
  UserStream is a simple twitter userstream library.