README.md in guard-rspec-4.6.5 vs README.md in guard-rspec-4.7.0

@@ -2,12 +2,12 @@
 
 [![Gem Version](https://badge.fury.io/rb/guard-rspec.png)](http://badge.fury.io/rb/guard-rspec) [![Build Status](https://secure.travis-ci.org/guard/guard-rspec.png?branch=master)](http://travis-ci.org/guard/guard-rspec) [![Dependency Status](https://gemnasium.com/guard/guard-rspec.png)](https://gemnasium.com/guard/guard-rspec) [![Code Climate](https://codeclimate.com/github/guard/guard-rspec.png)](https://codeclimate.com/github/guard/guard-rspec) [![Coverage Status](https://coveralls.io/repos/guard/guard-rspec/badge.png?branch=master)](https://coveralls.io/r/guard/guard-rspec)
 
 Guard::RSpec allows to automatically & intelligently launch specs when files are modified.
 
-* Compatible with RSpec >2.14 & 3
-* Tested against Ruby 2.2.x, JRuby and Rubinius.
+* Compatible with RSpec >2.99 & 3
+* Tested against Ruby 2.2.x, JRuby 9.0.5.0 ~~and Rubinius~~.
 
 ## Install
 
 Add the gem to your Gemfile (inside development group):
 
@@ -63,9 +63,11 @@
 ``` ruby
 guard :rspec, cmd: 'spring rspec -f doc' do
   # ...
 end
 ```
+
+NOTE: the above example assumes you have the `spring rspec` command installed - see here: https://github.com/jonleighton/spring-commands-rspec
 
 ### Running with bundler
 
 Running `bundle exec guard` will not run the specs with bundler. You need to change the `cmd` option to `bundle exec rspec`: