README.md in rubype-0.1.0 vs README.md in rubype-0.2.0

@@ -10,16 +10,16 @@
 # ex1
 class MyClass
   def sum(x, y)
     x + y
   end
-  type Numeric, Numeric >= Numeric, :sum
+  typesig sum: [Numeric, Numeric => Numeric]
 
   def wrong_sum(x, y)
     'string'
   end
-  type Numeric, Numeric >= Numeric, :sum
+  typesig wrong_sum: [Numeric, Numeric => Numeric]
 end
 
 MyClass.new.sum(1, 2)
 #=> 3
 
@@ -27,27 +27,18 @@
 #=> ArgumentError: Wrong type of argument, type of "str" should be Numeric
 
 MyClass.new.wrong_sum(1, 2)
 #=> TypeError: Expected wrong_sum to return Numeric but got "str" instead
 
-# ex2: (Ruby 2.1.0+)
-class MyClass
-  type Numeric, Numeric >= Numeric, def sum(x, y)
-    x + y
-  end
 
-  type Numeric, Numeric >= Numeric, def wrong_sum(x, y)
-    'string'
-  end
-end
-
-# ex3: (Ruby 2.1.0+)
+# ex2
 class People
   type People >= Any, def marry(people)
     # Your Ruby code as usual
   end
 end
+typesig marry: [People => Any]
 
 People.new.marry(People.new)
 #=> no error
 
 People.new.marry('non people')
@@ -61,13 +52,13 @@
 # It's totally OK!!
 class MyClass
   def sum(x, y)
     x + y
   end
-  type Numeric, Numeric >= Numeric, :sum
+  typesig sum: [Numeric, Numeric => Numeric]
 
-  def wrong_sum(x, y)
+  def sum_without_type(x, y)
     'string'
   end
 end
 ```
 
@@ -77,10 +68,10 @@
 
 class MyClass
   def foo(any_obj)
     1
   end
-  type Any >= Numeric, :foo
+  typesig sum: [Any => Numeric]
 end
 
 # It's totally OK!!
 MyClass.new.foo(1)
 # It's totally OK!!