虚拟现实与增强现实（眼镜或头盔）的现状与未来－简介
http://blog.csdn.net/yanzhanyi/article/details/41982033
Google VR | Google Developers
https://developers.google.com/vr/
https://developers.google.com/vr/android/
https://developers.google.com/vr/android/get-started
googlevr -github
https://github.com/googlevr/
VR - android -samples/treasure-hunt
https://developers.google.com/vr/android/samples/treasure-hunt
Unity - Game Engine
https://unity3d.com/cn/
虚幻引擎4是什么
https://www.unrealengine.com/zh-CN/what-is-unreal-engine-4
Microsoft HoloLens | Official Site
https://www.microsoft.com/microsoft-hololens/en-us
Oculus
http://www.oculus.com/