README.md in konstructor-0.3.0 vs README.md in konstructor-0.4.0

@@ -6,14 +6,15 @@
 [travis]: http://travis-ci.org/snovity/konstructor
 [coveralls]: https://coveralls.io/r/snovity/konstructor
 
 # Konstructor
 
-Konstructor is a small gem that gives you multiple
+This is a small gem that gives you multiple
 constructors in Ruby.
 
-Use `konstructor` keyword to declare constructors additional to the defaul one:
+Use `konstructor` keyword to declare constructors additional 
+to the defaul one:
 ```ruby
 class SomeClass
   konstructor
   def create(val)
     @val = val
@@ -156,12 +157,12 @@
 [Limitations page](https://github.com/snovity/konstructor/wiki/Limitations)
 for details.
 
 #### Using with other gems
 
-Konstructor doesn't affect other gems, including those
-that depend on metaprogramming, such as 
+Konstructor doesn't affect other gems depending on metaprogramming, 
+such as 
 [rake](https://github.com/ruby/rake),
 [thor](https://github.com/erikhuda/thor), 
 [contracts](https://github.com/egonSchiele/contracts.ruby), etc.
 
 For instnace, this is how Konstructor works with contracts:
@@ -189,9 +190,22 @@
 #### Performance
  
 Konstructor does all its work when class is being defined. Once class
 has been defined, it's just standard Ruby instance creation.
 Therefore, there is no runtime performance penalty. 
+
+As for the cost of declaring a constructor at initial load time, 
+it's roughly the same as declaring 3 properties with `attr_accessor`.
+```ruby
+  attr_accessor :one, :two, :three
+  
+  # following declaration take the same time as above declaration
+  konstructor
+  def create
+  end
+```  
+See [Benchmarks page](https://github.com/snovity/konstructor/wiki/Benchmarks)
+for details.
 
 Konstructor doesn't depend on other gems.
   
 #### Thread safety