updated documentation

Author: logical-steps

README.md

@@ -96,11 +96,10 @@ function balance($accountNumber)
     return $value;
 }
 
-$async = new Async();
-$async->await(balance(0))->then('var_export');
+Async::await(balance(0))->then('var_export');
 ```
 
-Now the code is clean and looks like synchronous, but runs asynchronously for better performance getting us 
+Now the code is clean and looks synchronous, but runs asynchronously for better performance getting us 
 best of both worlds :) 
 
 For more examples and integration with the frameworks take a look at [examples folder](examples)