README.md in with_last-0.1.1 vs README.md in with_last-0.2.0

@@ -1,10 +1,11 @@
 [![Gem Version](https://badge.fury.io/rb/with_last.svg)](https://badge.fury.io/rb/with_last)
+![Ruby](https://github.com/oieioi/with_last.rb/workflows/Ruby/badge.svg)
 
 # with_last.rb
 
-Add `each_with_last` to `Array`.
+Add `with_last` method to `Enumerator` class and `each_with_last` to `Enumerable` module.
 
 ## Installation
 
 ```ruby
 gem 'with_last'
@@ -15,20 +16,29 @@
     $ bundle install
 
 ## Usage
 
 ```ruby
-[1,2,3,4,5,6].each_with_last { |item, is_last|
-  puts item
-  puts is_last ? 'done' : 'to be continued'
+[1,2,3].each_with_last { |item, last|
+  print item
+  print last ? 'done!' : '->'
 }
-```
 
+# "1->2->3done!"
 
+[1,2,3].map.with_last { |item, last| "#{item * item}#{last ? '.' : ''}" }.join(',')
+
+# => "1,4,9."
+```
+
 ```erb
-<% some_list.each_with_last do |item, is_last| %>
-  <%= item %><%= is_last ? '.' : ',' %>
+<% %w[hoge fuga piyo].each_with_last do |item, is_last| %>
+  <%= item %><%= is_last ? '.' : ', ' %>
 <% end %>
+
+<!--
+hoge, fuga, piyo.
+-->
 ```
 
 ## License
 
 The gem is available as open source under the terms of the [MIT License](https://opensource.org/licenses/MIT).