I am getting an warning message because I manually added a jar file to my local maven repository.
[INFO] Downloading: http://repo.maven.apache.org/maven2/com/netsu
You should add jar to your local repository like:
mvn install:install-file -DgroupId=... -DartifactId=... -Dversion=... -Dpackaging=jar -Dfile=... -DgeneratePom=true
-DgeneratePom=true genertes POM automatically...
-DgeneratePom=true