add tests for sound pause (for pr#1205)
add tests for sound pause (for pr#1205)

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