README.md in haskell-0.0.3 vs README.md in haskell-0.1.0

@@ -7,15 +7,15 @@
 ```rb
 require 'haskell'
 
 # ex1: (Ruby 2.1.0+)
 class MyClass
-  type Numeric >= Numeric >= Numeric, def sum(x, y)
+  type Numeric, Numeric >= Numeric, def sum(x, y)
     x + y
   end
 
-  type Numeric >= Numeric >= Numeric, def wrong_sum(x, y)
+  type Numeric, Numeric >= Numeric, def wrong_sum(x, y)
     'string'
   end
 end
 
 MyClass.new.sum(1, 2)
@@ -45,21 +45,21 @@
 # ex3: (Ruby 1.8.0+)
 class MyClass
   def sum(x, y)
     x + y
   end
-  type Numeric >= Numeric >= Numeric, :sum
+  type Numeric, Numeric >= Numeric, :sum
 end
 ```
 
 ## Feature
 ### Typed method can coexist with non-typed method
 
 ```ruby
 # It's totally OK!!
 class MyClass
-  type Numeric >= Numeric >= Numeric, def sum(x, y)
+  type Numeric, Numeric >= Numeric, def sum(x, y)
     x + y
   end
 
   def wrong_sum(x, y)
     'string'
@@ -97,16 +97,26 @@
 
 Or install it yourself as:
 
     $ gem install haskell
 
-## Contributing
 
-1. Fork it ( https://github.com/[my-github-username]/haskell/fork )
-2. Create your feature branch (`git checkout -b my-new-feature`)
-3. Commit your changes (`git commit -am 'Add some feature'`)
-4. Push to the branch (`git push origin my-new-feature`)
-5. Create a new Pull Request
+### Contributing
 
+Fork it ( https://github.com/[my-github-username]/haskell/fork )
+
+Create your feature branch (`git checkout -b my-new-feature`)
+
+    $ bundle install --path vendor/bundle
+
+Commit your changes (`git commit -am 'Add some feature'`)
+
+    $ bundle exec rake test
+
+    > 5 runs, 39 assertions, 0 failures, 0 errors, 0 skips
+
+Push to the branch (`git push origin my-new-feature`)
+
+Create a new Pull Request
 
 ## Credits
 [@chancancode](https://github.com/chancancode) first brought this to my attention. I've stolen some idea from him.