Drop ruby 1.8 support, again.

This reverts commit 61229c4.

.travis.yml

@@ -1,6 +1,5 @@
 bundler_args: --without guard
 rvm:
-  - 1.8.7
   - 1.9.2
   - 1.9.3
   - 2.0.0

Gemfile

@@ -3,8 +3,8 @@ source 'https://rubygems.org'
 # Specify your gem's dependencies in rainbow.gemspec
 gemspec
 
-gem 'coveralls', :require => false
-gem 'mime-types', '< 2.0.0', :platforms => [:ruby_18]
+gem 'coveralls', require: false
+gem 'mime-types', '< 2.0.0', platforms: [:ruby_18]
 
 group :guard do
   gem 'guard'

Guardfile

@@ -1,7 +1,7 @@
 # A sample Guardfile
 # More info at https://github.com/guard/guard#readme
 
-guard :rspec, :cmd => 'rspec --color' do
+guard :rspec, cmd: 'rspec --color' do
   watch(%r{^spec/.+_spec\.rb$})
   watch(%r{^lib/(.+)\.rb$})     { "spec" }
   watch('spec/spec_helper.rb')  { "spec" }

lib/rainbow/color.rb

@@ -52,15 +52,15 @@ def codes
     class Named < Indexed
 
       NAMES = {
-        :black   => 0,
-        :red     => 1,
-        :green   => 2,
-        :yellow  => 3,
-        :blue    => 4,
-        :magenta => 5,
-        :cyan    => 6,
-        :white   => 7,
-        :default => 9,
+        black:   0,
+        red:     1,
+        green:   2,
+        yellow:  3,
+        blue:    4,
+        magenta: 5,
+        cyan:    6,
+        white:   7,
+        default: 9,
       }
 
       def initialize(ground, name)

lib/rainbow/presenter.rb

@@ -6,13 +6,13 @@ module Rainbow
   class Presenter < ::String
 
     TERM_EFFECTS = {
-      :reset     => 0,
-      :bright    => 1,
-      :italic    => 3,
-      :underline => 4,
-      :blink     => 5,
-      :inverse   => 7,
-      :hide      => 8,
+      reset:     0,
+      bright:    1,
+      italic:    3,
+      underline: 4,
+      blink:     5,
+      inverse:   7,
+      hide:      8,
     }
 
     # Sets color of this text.

rainbow.gemspec

@@ -4,14 +4,15 @@ $LOAD_PATH.unshift(lib) unless $LOAD_PATH.include?(lib)
 require 'rainbow/version'
 
 Gem::Specification.new do |spec|
-  spec.name          = "rainbow"
-  spec.version       = Rainbow::VERSION
-  spec.authors       = ["Marcin Kulik"]
-  spec.email         = ["[email protected]"]
-  spec.description   = %q{Colorize printed text on ANSI terminals}
-  spec.summary       = %q{Colorize printed text on ANSI terminals}
-  spec.homepage      = "https://github.com/sickill/rainbow"
-  spec.license       = "MIT"
+  spec.name                  = "rainbow"
+  spec.version               = Rainbow::VERSION
+  spec.authors               = ["Marcin Kulik"]
+  spec.email                 = ["[email protected]"]
+  spec.description           = %q{Colorize printed text on ANSI terminals}
+  spec.summary               = %q{Colorize printed text on ANSI terminals}
+  spec.homepage              = "https://github.com/sickill/rainbow"
+  spec.license               = "MIT"
+  spec.required_ruby_version = '>= 1.9.2'
 
   spec.files         = `git ls-files`.split($/)
   spec.executables   = spec.files.grep(%r{^bin/}) { |f| File.basename(f) }

spec/support/presenter_shared_examples.rb

@@ -1,7 +1,7 @@
 shared_examples_for "presenter with shortcut color methods" do
   [:black, :red, :green, :yellow, :blue, :magenta, :cyan, :white].each do |name|
     describe "##{name}" do
-      subject { presenter.send(name) }
+      subject { presenter.public_send(name) }
 
       it { should eq(presenter.color(name)) }
     end

spec/unit/presenter_spec.rb

@@ -17,7 +17,7 @@ module Rainbow
     end
 
     shared_examples_for "text color method" do
-      let(:color) { double('color', :codes => [1, 2]) }
+      let(:color) { double('color', codes: [1, 2]) }
 
       before do
         allow(Color).to receive(:build).
@@ -34,7 +34,7 @@ module Rainbow
     end
 
     shared_examples_for "text background method" do
-      let(:color) { double('color', :codes => [1, 2]) }
+      let(:color) { double('color', codes: [1, 2]) }
 
       before do
         allow(Color).to receive(:build).