Add some useful badges with automatic version detection: Maven and Javadoc

Author: valery1707

README.md

@@ -1,5 +1,8 @@
 ## Overview
 
+[![Maven Central](https://maven-badges.herokuapp.com/maven-central/com.fasterxml/classmate/badge.svg)](https://maven-badges.herokuapp.com/maven-central/com.fasterxml/classmate/)
+[![Javadoc](https://javadoc-emblem.rhcloud.com/doc/com.fasterxml/classmate/badge.svg)](http://www.javadoc.io/doc/com.fasterxml/classmate)
+
 ClassMate is a zero-dependency Java library for accurately introspecting type information, including reliable resolution of generic type declarations for both classes ("types") and members (fields, methods and constructors).
 
 Project is licensed under [Apache 2](http://www.apache.org/licenses/LICENSE-2.0.txt).