remove old information from news and updates section of readme

README.md

@@ -13,7 +13,6 @@ onoff supports Node.js versions 4, 6, 8, 10 and 12.
 
 ## Contents
 
- * [News & Updates](#news--updates)
  * [Installation](#installation)
  * [Usage](#usage)
    * [LEDs and Buttons](#leds-and-buttons)
@@ -28,18 +27,6 @@ onoff supports Node.js versions 4, 6, 8, 10 and 12.
  * [Related Packages](#related-packages)
  * [Additional Information](#additional-information)
 
-## News & Updates
-
-### March 2019: onoff v4.1.0
-
-onoff v4.1.0 adds type definitions for TypeScript.
-
-### February 2019: onoff v4.0.0
-
-onoff v4.0.0 adds support for Promises to the asynchronous read and write
-methods. This is a breaking change as the asynchronous read and write methods
-can now return Promises in scenarios where undefined was previously returned.
-
 ## Installation
 
 ```