add title info to enter vr button (#2905)
add title info to enter vr button (#2905)


googlecreativelab/aframe,aframevr/aframe,mkungla/aframe,aframevr/aframe,dmarcos/aframe,ngokevin/aframe,RSpace/aframe,chenzlabs/aframe,RSpace/aframe,darkwing/aframe,wizgrav/aframe,wizgrav/aframe,mkungla/aframe,ngokevin/aframe,chenzlabs/aframe,weddingdj/aframe,darkwing/aframe,dmarcos/aframe,weddingdj/aframe,googlecreativelab/aframe