Update the README to say we require Java 8.
@@ -19,7 +19,7 @@ The [Closure Compiler](https://developers.google.com/closure/compiler/) is a too
## Building it Yourself
-Note: The Closure Compiler requires [Java 7 or higher](https://www.java.com/).
+Note: The Closure Compiler requires [Java 8 or higher](https://www.java.com/).
### Using [Maven](https://maven.apache.org/)
