[docs] add examples of flushToDOM()
[docs] add examples of flushToDOM()

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