Update README

Author: Glavo

README.md

@@ -1,12 +1,17 @@
 # Module Info Compiler
 
+[![](https://img.shields.io/maven-central/v/org.glavo/module-info-compiler?label=Maven%20Central)](https://search.maven.org/artifact/org.glavo/module-info-compiler)
+
 A tool for compiling `module-info.java` for Java alone.
 
 It can easily compile `module-info.java` for your Java 8 project to fit JPMS without complicated module path configuration.
 
 It only parses the syntax of `module-info.java` without checking the actual module.
 If you really don't know how to configure javac to compile `module-info.java` correctly in a complex project, it can help you.
 
+This tool does not depend on javac, it can run on Java 8 or higher, 
+and you can configure the major version of the target class file.
+
 ## Usage
 
 Currently this tool supports being used as a command line tool, and also supports being added as a Maven dependency.