add readme

README.md

+# Private Maven "Repository"
+
+## To add new package or version
+
+### Add using pom.xml metadata
+```bash
+mvn org.apache.maven.plugins:maven-install-plugin:3.0.0-M1:install-file -Dfile=<path-to-file> -DlocalRepositoryPath=<path-to-this-repository>
+```
+
+Example
+```bash
+mvn org.apache.maven.plugins:maven-install-plugin:3.0.0-M1:install-file -Dfile=primefaces-9.0-SNAPSHOT.jar -DlocalRepositoryPath=. 
+```
+
+### Add manually
+```bash
+mvn install:install-file -Dfile=<path-to-file> -DgroupId=<group-id> -DartifactId=<artifact-id> -Dversion=<version> -DlocalRepositoryPath=<path-to-this-repository> -Dpackaging=jar -DgeneratePom=true -DcreateChecksum=true
+```
+
+Example
+```bash
+mvn install:install-file -Dfile=primefaces-9.0-SNAPSHOT.jar -DgroupId=org.primefaces -DartifactId=primefaces -Dversion=9.0-8695c66 -DlocalRepositoryPath=.  -Dpackaging=jar -DgeneratePom=true -DcreateChecksum=true
+```
+
+## Links
+- https://maven.apache.org/guides/mini/guide-3rd-party-jars-local.html
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