Update babylon.particleSystem.ts

src/Particles/babylon.particleSystem.ts

@@ -450,7 +450,7 @@
             var serializationObject: any = {};
 
             serializationObject.name = this.name;
-            if (this.emittor.position) {
+            if (this.emitter.position) {
                 serializationObject.emitterId = this.emitter.id;
             } else {
                 serializationObject.emitter = this.emitter.asArray();;