README.md in m-1.6.1 vs README.md in m-1.6.2

@@ -18,27 +18,14 @@
 
 If you’re using Bundler, you’ll need to include it in your Gemfile. Toss it into the test group:
 
 ``` ruby
 group :test do
-  gem 'm', '~> 1.5.0'
+  gem "m"
 end
 ```
 
-Developing a RubyGem? Add m as a development dependency.
-
-
-``` ruby
-Gem::Specification.new do |gem|
-  # ...
-  gem.add_development_dependency "m", "~> 1.5.0"
-end
-```
-
-m works on Ruby 2.0+ only and support is only provided for [versions currently maintained by the community](https://www.ruby-lang.org/en/downloads/branches/).
-
-
 USAGE
 =====
 
 Basically, I was sick of using the -n flag to grab one test to run. Instead, I prefer how RSpec’s test runner allows tests to be run by line number.
 
@@ -136,31 +123,22 @@
 
 
 CONTRIBUTING
 ============
 
-## Setup
-
-This project uses [Appraisal](https://github.com/thoughtbot/appraisal) to test against different versions of dependencies.
-
-To install all scenarios (appraisals):
-
-    bundle install
-    bundle exec appraisal install
-
 ## Testing
 
 You can run all the tests with:
 
     bundle exec rake tests
 
 You can also run tests selectively. For minitest 4 run:
 
-    appraisal minitest4 rake test
+    bundle exec rake test:minitest4
 
 and the ones for minitest 5 with:
 
-    appraisal minitest5 rake test
+    bundle exec rake test:minitest5
 
 
 LICENSE
 =======