Revert changes.md
Revert changes.md
jasonbeverage/cesium,YonatanKra/cesium,likangning93/cesium,likangning93/cesium,YonatanKra/cesium,CesiumGS/cesium,CesiumGS/cesium,likangning93/cesium,YonatanKra/cesium,progsung/cesium,CesiumGS/cesium,AnalyticalGraphicsInc/cesium,likangning93/cesium,jasonbeverage/cesium,progsung/cesium,AnalyticalGraphicsInc/cesium,CesiumGS/cesium,likangning93/cesium,YonatanKra/cesium,CesiumGS/cesium