main is now the preferred default branch

Author: Katsute

README.md

@@ -1,9 +1,9 @@
 # SimpleHttpServer
 [![jitpack](https://jitpack.io/v/com.kttdevelopment/simplehttpserver.svg)](https://jitpack.io/#com.kttdevelopment/simplehttpserver)
 [![jitci](https://jitci.com/gh/Ktt-Development/simplehttpserver/svg)](https://jitci.com/gh/Ktt-Development/simplehttpserver)
-[![Build Status](https://travis-ci.com/Ktt-Development/simplehttpserver.svg?branch=master)](https://travis-ci.com/Ktt-Development/simplehttpserver)
+[![Build Status](https://travis-ci.com/Ktt-Development/simplehttpserver.svg?branch=main)](https://travis-ci.com/Ktt-Development/simplehttpserver)
 [![version](https://img.shields.io/github/v/release/ktt-development/simplehttpserver?include_prereleases)](https://github.com/Ktt-Development/simplehttpserver/releases)
-[![license](https://img.shields.io/github/license/Ktt-Development/simplehttpserver)](https://github.com/Ktt-Development/simplehttpserver/blob/master/LICENSE)
+[![license](https://img.shields.io/github/license/Ktt-Development/simplehttpserver)](https://github.com/Ktt-Development/simplehttpserver/blob/main/LICENSE)
 
 SimpleHttpServer is a simplified implementation of the [sun http server](https://docs.oracle.com/en/java/javase/11/docs/api/jdk.httpserver/com/sun/net/httpserver/package-summary.html) for JDK11. This library simplifies complex operations for both the server, exchange, and handler.