Good bye Ruby 2.0.0

Ruby 2.0.0 will be end-of-life on Feb. 24th, 2016.
https://www.ruby-lang.org/en/news/2015/12/16/ruby-2-0-0-p648-released/

.travis.yml

@@ -7,8 +7,6 @@ script:
   - "bundle exec rake $TASK"
 matrix:
   include:
-    - rvm: 2.0.0
-      env: TASK=test
     - rvm: 2.1
       env: TASK=test
     - rvm: 2.2

Gemfile

@@ -7,8 +7,7 @@ gem 'benchmark-ips', '2.3.0'
 gem 'minitest-line'
 gem 'pry-byebug'
 
-is_windows = RUBY_PLATFORM =~ /mswin|mingw|bccwin|wince/
-if RUBY_VERSION >= '2.1.0' && !is_windows
+if RUBY_PLATFORM !~ /mswin|mingw|bccwin|wince/
   gem 'faml'
   gem 'lineprof'
   gem 'stackprof'

benchmark/utils/benchmark_ips_extension.rb

@@ -16,7 +16,7 @@ module Benchmark
           end
         end
       end
-      Entry.send(:prepend, EntryExtension)
+      Entry.prepend(EntryExtension)
     end
   end
 

bin/test

@@ -1,7 +1,6 @@
 #!/bin/bash
 
 VERSIONS=(
-  2.0.0
   2.1.7
   2.2.3
   2.3.0