Exemple :

mvn org.apache.maven.plugins:maven-install-plugin:2.3.1:install-file -Dfile=IntroscopeJDBC-1.0.jar -DgroupId=com.wily -DartifactId=IntroscopeJDBC -Dversion=1.0 -Dpackaging=jar -DlocalRepositoryPath=./lib

Tomcat, Maven et Eclipse :
1) Eclipse Java EE developer Tools
2) Properties, Server, Add Runtime
3) Project Facet : Dynamic web Module
4) Deployment Assembly : add maven dependencies