步骤一：下载 Eclipse Kepler(https://www.eclipse.org/downloads/packages/eclipse-rcp-and-rap-developers/keplersr2)
步骤二：Click Window -> Preferences -> maven -> discovery -> open catalog and type Tycho. Check the “Tycho Configurator” checkbox
原文：http://www.cnblogs.com/chensi-buzhibuting/p/6206142.html