Merge pull request #629 from greenrobot/readme-updates

Readme updates

README.md

@@ -62,6 +62,8 @@ Add EventBus to your project
 ----------------------------
 <a href="https://search.maven.org/search?q=g:org.greenrobot%20AND%20a:eventbus"><img src="https://img.shields.io/maven-central/v/org.greenrobot/eventbus.svg"></a>
 
+Available on <a href="https://search.maven.org/search?q=g:org.greenrobot%20AND%20a:eventbus">Maven Central</a>.
+
 Via Gradle:
 ```gradle
 implementation 'org.greenrobot:eventbus:3.1.1'
@@ -76,7 +78,23 @@ Via Maven:
 </dependency>
 ```
 
-Or download [the latest JAR](https://search.maven.org/remote_content?g=org.greenrobot&a=eventbus&v=LATEST) from Maven Central.
+R8, ProGuard
+------------
+
+If your project uses R8 or ProGuard add the following rules:
+
+```bash
+-keepattributes *Annotation*
+-keepclassmembers class * {
+    @org.greenrobot.eventbus.Subscribe <methods>;
+}
+-keep enum org.greenrobot.eventbus.ThreadMode { *; }
+
+# And if you use AsyncExecutor:
+-keepclassmembers class * extends org.greenrobot.eventbus.util.ThrowableFailureEvent {
+    <init>(java.lang.Throwable);
+}
+```
 
 Homepage, Documentation, Links
 ------------------------------
@@ -86,8 +104,6 @@ For more details please check the [EventBus website](http://greenrobot.org/event
 
 [Documentation](http://greenrobot.org/eventbus/documentation/)
 
-[ProGuard](http://greenrobot.org/eventbus/documentation/proguard)
-
 [Changelog](http://greenrobot.org/eventbus/changelog/)
 
 [FAQ](http://greenrobot.org/eventbus/documentation/faq/)
@@ -102,10 +118,8 @@ EventBus binaries and source code can be used according to the [Apache License,
 
 More Open Source by greenrobot
 ==============================
-[__ObjectBox__](http://objectbox.io/) ([GitHub](https://github.com/objectbox/objectbox-java)) is a new superfast object-oriented database for mobile.
-
-[__Essentials__](http://greenrobot.org/essentials/) ([GitHub](https://github.com/greenrobot/essentials)) is a set of utility classes and hash functions for Android & Java projects.
+[__ObjectBox__](https://objectbox.io/) ([GitHub](https://github.com/objectbox/objectbox-java)) is a new superfast object-oriented database for mobile.
 
-[__greenDAO__](http://greenrobot.org/greendao/) ([GitHub](https://github.com/greenrobot/greenDAO)) is an ORM optimized for Android: it maps database tables to Java objects and uses code generation for optimal speed.
+[__Essentials__](https://github.com/greenrobot/essentials) is a set of utility classes and hash functions for Android & Java projects.
 
-Check our [homepage](http://greenrobot.org/) to stay up to date.
+[__greenDAO__](https://github.com/greenrobot/greenDAO) is an ORM optimized for Android: it maps database tables to Java objects and uses code generation for optimal speed.