eclipse3.6 安装 m2eclipse插件
在eclipse3.6上安装m2eclipse插件时有可能出现以下错误：
Cannot complete the install because one or more required items could not be found.
Software being installed: Maven Integration for Eclipse (Required) 0.12.1.20110112-1712 (org.maven.ide.eclipse.feature.feature.group 0.12.1.20110112-1712)
Missing requirement: Maven Integration for Eclipse (Editors) 0.12.1.20110112-1712 (org.maven.ide.eclipse.editor 0.12.1.20110112-1712) requires 'bundle org.eclipse.zest.core 0.0.0' but it could not be found
Cannot satisfy dependency:
From: Maven Integration for Eclipse (Required) 0.12.1.20110112-1712 (org.maven.ide.eclipse.feature.feature.group 0.12.1.20110112-1712)
To: org.maven.ide.eclipse.editor [0.12.1.20110112-1712]
原因为缺少maven依赖的eclipse插件：
先安排以下插件:
GEF http://download.eclipse.org/tools/gef/updates/releases/
再安装 m2e插件.
m2e http://m2eclipse.sonatype.org/sites/m2e/
