fix video used in "360° Video Boilerplate video" to play back on mobile iOS (#2656)
fix video used in "360° Video Boilerplate video" to play back on mobile iOS (#2656)

Thanks!
wizgrav/aframe,dmarcos/aframe,chenzlabs/aframe,aframevr/aframe,darkwing/aframe,weddingdj/aframe,weddingdj/aframe,ngokevin/aframe,ngokevin/aframe,jaxmolina/ar,googlecreativelab/aframe,darkwing/aframe,RSpace/aframe,chenzlabs/aframe,googlecreativelab/aframe,mkungla/aframe,aframevr/aframe,wizgrav/aframe,dmarcos/aframe,RSpace/aframe,mkungla/aframe,jaxmolina/ar