Readme.md in parallel_tests-0.4.6 vs Readme.md in parallel_tests-0.4.7

@@ -6,22 +6,24 @@
 ## Install
 ### Rails 3
 As gem
     sudo gem install parallel_tests
     # add to Gemfile
-    gem "parallel_tests"
+    gem "parallel_tests", :group=>:development
 
 OR as plugin
     sudo gem install parallel
     rails plugin install git://github.com/grosser/parallel_tests.git
 
 ### Rails 2
 
 As gem
     sudo gem install parallel_tests
-    # add to config/environment.rb
+    # add to config/environments/development.rb
     config.gem "parallel_tests"
+    # add to Rakefile
+    begin; require 'parallel_tests/tasks'; rescue LoadError; end
 
 OR as plugin
 
     sudo gem install parallel
     ./script/plugin install git://github.com/grosser/parallel_tests.git
@@ -124,10 +126,10 @@
 
 Authors
 ====
 inspired by [pivotal labs](http://pivotallabs.com/users/miked/blog/articles/849-parallelize-your-rspec-suite)  
 
-###Contributors (alphabetical)
+### [Contributors](http://github.com/grosser/parallel_tests/contributors)
  - [Charles Finkel](http://charlesfinkel.com/)
  - [Indrek Juhkam](http://urgas.eu)
  - [Jason Morrison](http://jayunit.net)
  - [jinzhu](http://github.com/jinzhu)
  - [Joakim Kolsjö](http://www.rubyblocks.se)