Update README.md

README.md

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 # Topaz512-driver ![Maven build](https://github.com/mdeverdelhan/Topaz512-driver/workflows/Maven%20build/badge.svg?branch=master)
 
-Java library/driver for Innovision/Broadcom Topaz512 NFC tags
+Here is a simple Java library/driver for building commands to communicate with Innovision/Broadcom Topaz512 NFC tags.
+
+### Features
+
+  * Fully compliant with Broadcom BCM20203T512 specification
+  * JDK 11 or later
+  * MIT Licensed
+
+### Build
+
+```bash
+~$ mvn clean package
+```
+
+### Usage
+
+```java
+Topaz512 t512 = new Topaz512();
+
+// Getting tag UID
+byte[] ridCommand = t512.buildRidCommand();
+byte[] tagUid = ...; // Send the RID command and get the tag UID
+
+// Reading 8 bytes at block 0x1A
+byte add8 = Topaz512.buildAdd8((byte) 0x1A);
+byte[] read8Command = t512.buildRead8Command(add8);
+byte[] read8Response = ...; // Send the READ8 command and get the 8 bytes
+```
+
+## About the Topaz512 tags
+
+TODO
+
+## Donations
+
+Bitcoin address: 13BMqpqbzJ62LjMWcPGWrTrdocvGqifdJ3