Update babylon.skeleton.ts
Update babylon.skeleton.ts

Added a method to return as an Array, all AnimationRanges defined for this skeleton. This could  be useful to applications like editors which might want to display a list of animations available  on a skeleton
jbousquie/Babylon.js,Hersir88/Babylon.js,RaananW/Babylon.js,abow/Babylon.js,NicolasBuecher/Babylon.js,BabylonJS/Babylon.js,Temechon/Babylon.js,RaananW/Babylon.js,jbousquie/Babylon.js,sebavan/Babylon.js,Temechon/Babylon.js,Temechon/Babylon.js,NicolasBuecher/Babylon.js,RaananW/Babylon.js,Hersir88/Babylon.js,Kesshi/Babylon.js,BabylonJS/Babylon.js,jbousquie/Babylon.js,abow/Babylon.js,abow/Babylon.js,Hersir88/Babylon.js,NicolasBuecher/Babylon.js,Kesshi/Babylon.js,sebavan/Babylon.js,BabylonJS/Babylon.js,sebavan/Babylon.js,Kesshi/Babylon.js