Update README.md

README.md

@@ -2,6 +2,8 @@
 
 > Easy to use [Ant](https://ant.apache.org/) task for building JavaCard CAP files in a declarative way.
 
+Have a consistent and concise build declaration for JavaCard applets, no matter which which JavaCard version you target.
+
 [![Build Status](https://github.com/martinpaljak/ant-javacard/workflows/Robot%20builder/badge.svg)](https://github.com/martinpaljak/ant-javacard/actions) [![Latest release](https://img.shields.io/github/release/martinpaljak/ant-javacard.svg)](https://github.com/martinpaljak/ant-javacard/releases/latest) [![Maven version](https://img.shields.io/maven-metadata/v?label=javacard.pro%20maven%20version&metadataUrl=https%3A%2F%2Fjavacard.pro%2Fmaven%2Fcom%2Fgithub%2Fmartinpaljak%2Fant-javacard%2Fmaven-metadata.xml)](https://gist.github.com/martinpaljak/c77d11d671260e24eef6c39123345cae) [![MIT licensed](https://img.shields.io/badge/license-MIT-blue.svg)](https://github.com/martinpaljak/ant-javacard/blob/master/LICENSE)
 
 ## Features
@@ -21,7 +23,6 @@
 
 ## Download & Use
  * Download [`ant-javacard.jar`](https://github.com/martinpaljak/ant-javacard/releases/latest/download/ant-javacard.jar)
-   * Java version usable with all SDK-s is 1.8! Use SDK 3.0.5u3 and `targetsdk` to compile with Java 11 for older versions.
  * Or use the download task:
 ```xml
 <get src="https://github.com/martinpaljak/ant-javacard/releases/latest/download/ant-javacard.jar" dest="." skipexisting="true"/>
@@ -116,6 +117,15 @@ Notes:
  * `%a` - package AID
  * `%j` - targeted JavaCard version
 
+### Command line utility
+`ant-javacard.jar` can be used to dump built .cap file metadata and to re-run off-card verifier.
+
+- dump .cap file metadata
+  - `java -jar ant-javacard.jar <capfile>`
+- run off-card verifier
+  - `java -jar ant-javacard.jar <sdk> <capfile> <expfiles>`
+
+
 ## Maven dependency
 Releases are published to [`https://mvn.javacard.pro/maven/`](https://mvn.javacard.pro/maven/). To use it, add this to your `pom.xml`: