Changes

[[WeLens]] - rent [[Gear VR]]

[[SensoMotoric Instruments]] (SMI) 's [[foveated rendering]] - [http://uploadvr.com/smi-eye-tracking-foveated-rendering-exclusive/ reference 1] [http://www.roadtovr.com/hands-on-smi-proves-that-foveated-rendering-is-here-and-it-really-works/ reference 2] [http://uploadvr.com/smi-hands-on-250hz-eye-tracking/ reference 3] - 250Hz eye-tracking kit for HMDs.