README.md in multi_range-2.2.0 vs README.md in multi_range-2.2.1

- old
+ new

@@ -7,12 +7,11 @@
 [![Test Coverage](https://codeclimate.com/github/khiav223577/multi_range/badges/coverage.svg)](https://codeclimate.com/github/khiav223577/multi_range/coverage)
 
 ## Supports
  
 - Ruby 2.3 ~ 2.7
-
-For Ruby 1.8.x and 1.9.x, please use multi_range < 2.
-For Ruby 2.0 ~ 2.2, please use multi_range <= 2.1.
+  - For Ruby 1.8.x and 1.9.x, please use multi_range < v2.0.0
+  - For Ruby 2.0 ~ 2.2, please use multi_range < v2.2.0
 
 ## Installation
 
 ```ruby
 gem 'multi_range'