add back instructions to README
add back instructions to README

dmarcos/aframe,RSpace/aframe,darkwing/aframe,fernandojsg/aframe,wizgrav/aframe,weddingdj/aframe,dmarcos/aframe,googlecreativelab/aframe,MatthewShotton/aframe,chenzlabs/aframe,mkungla/aframe,wizgrav/aframe,ngokevin/aframe,jzitelli/aframe,ngokevin/aframe,msimpson/aframe,googlecreativelab/aframe,aframevr/aframe,fernandojsg/aframe,darkwing/aframe,jzitelli/aframe,aframevr/aframe-core,jaxmolina/ar,jaxmolina/ar,msimpson/aframe,weddingdj/aframe,RSpace/aframe,chenzlabs/aframe,aframevr/aframe,mkungla/aframe,aframevr/aframe-core,MatthewShotton/aframe