Update README.md

Author: AB-xdev

README.md

@@ -1,3 +1,47 @@
 # Central
 
-Central repository for XDEV's GitHub packages
+Central repository for [XDEV's GitHub packages](https://github.com/orgs/xdev-software/packages?repo_name=central)
+
+## How to use it?
+
+→ https://docs.github.com/en/packages/working-with-a-github-packages-registry/working-with-the-apache-maven-registry#authenticating-with-a-personal-access-token
+
+``~/.m2/settings.xml``
+```xml
+<settings xmlns="http://maven.apache.org/SETTINGS/1.0.0"
+  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+  xsi:schemaLocation="http://maven.apache.org/SETTINGS/1.0.0
+                      http://maven.apache.org/xsd/settings-1.0.0.xsd">
+
+  <activeProfiles>
+    <activeProfile>github-xdev</activeProfile>
+  </activeProfiles>
+
+  <profiles>
+    <profile>
+      <id>github-xdev</id>
+      <repositories>
+        <repository>
+          <id>central</id>
+          <url>https://repo.maven.apache.org/maven2</url>
+        </repository>
+        <repository>
+          <id>github</id>
+          <url>https://maven.pkg.github.com/xdev-software/central</url>
+          <snapshots>
+            <enabled>true</enabled>
+          </snapshots>
+        </repository>
+      </repositories>
+    </profile>
+  </profiles>
+
+  <servers>
+    <server>
+      <id>github-xdev</id>
+      <username>USERNAME</username>
+      <password>TOKEN</password>
+    </server>
+  </servers>
+</settings>
+```