增加MiraiForum

README.md

@@ -9,6 +9,7 @@
 [![Download](https://api.bintray.com/packages/him188moe/mirai/mirai-core/images/download.svg)](https://bintray.com/him188moe/mirai/mirai-core/)
 [![Maven Central](https://img.shields.io/maven-central/v/net.mamoe/mirai-core-api.svg?label=Maven%20Central)](https://search.maven.org/search?q=net.mamoe%20mirai)
 [![Gitter](https://badges.gitter.im/mamoe/mirai.svg)](https://gitter.im/mamoe/mirai?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge)
+[![MiraiForum](https://img.shields.io/badge/post-on%20MiraiForum-yellow)](https://mirai.mamoe.net)
 
 mirai 是一个在全平台下运行，提供 QQ Android 协议支持的高效率机器人库