Update README

Author: MCUdude

README.md

@@ -1,5 +1,5 @@
 # MegaCore
-[![Build Status](https://travis-ci.com/MCUdude/MegaCore.svg?branch=master)](https://travis-ci.com/MCUdude/MegaCore) [![MegaCore forum thread](https://img.shields.io/badge/support-forum-blue.svg)](https://forum.arduino.cc/index.php?topic=386733.0)
+[![MegaCore forum thread](https://img.shields.io/badge/support-forum-blue.svg)](https://forum.arduino.cc/index.php?topic=386733.0)
 
 An Arduino core for most 64 and 100-pin AVRs, all running the [Urboot](#write-to-own-flash) bootloader.
 This core requires at least Arduino IDE v1.8, where v1.8.9 or newer is recommended. IDE 2.x should also work.