Update Java version in README.md

Java 8 has been required since #457.

Author: jboning

README.md

@@ -11,7 +11,7 @@ A Java implementation of [JSON Web Token (JWT) - RFC 7519](https://tools.ietf.or
 
 If you're looking for an **Android** version of the JWT Decoder take a look at our [JWTDecode.Android](https://github.com/auth0/JWTDecode.Android) library.
 
-> This library currently supports Java 7. Beginning soon, it will require Java 8 as the minimum supported Java version. See [this issue](https://github.com/auth0/java-jwt/issues/457) for additional information and timelines.
+> This library requires Java 8 or higher. The last version that supported Java 7 was 3.11.0.
 
 ## Installation