1. Open Help-->Install New Software and enter http://download.eclipse.org/eclipse/updates/4.4 in Work with
2. Enter " Eclipse 2.0 Style Plugin Support" in "type filter text" , as shown below:
3. Install the veloeclipse plug-in offline, decompress it and put it into the features and plugins folders of eclipse respectively.
Article source: http://www.ijiuwen.com/blog/950376493154304