Update EllipsoidGraphics.js
Update EllipsoidGraphics.js

Added partial ellipsoid capability.
CesiumGS/cesium,progsung/cesium,AnalyticalGraphicsInc/cesium,likangning93/cesium,YonatanKra/cesium,likangning93/cesium,likangning93/cesium,likangning93/cesium,YonatanKra/cesium,CesiumGS/cesium,AnalyticalGraphicsInc/cesium,YonatanKra/cesium,CesiumGS/cesium,likangning93/cesium,progsung/cesium,YonatanKra/cesium,CesiumGS/cesium,CesiumGS/cesium