ERROR:
Could not calculate build plan: Plugin org.apache.maven.plugins:maven-resources-plugin:2.6 or one of its dependencies could not be resolved: Failed to
Seems your settings.xml file is missing your .m2 (local maven repo) folder.
settings.xml
When using eclipse navigate to Window -> Preferences -> Maven -> User Settings -> Browse to your settings.xml and click apply.
Then do maven Update Project.