Added Streaming Assets URL to Unity Config

Author: jeffreylanters

source/interfaces/IUnityConfig.ts

@@ -14,6 +14,13 @@ export default interface IUnityConfig {
    */
   modules?: Object;
 
+  /**
+   * The url where the streaming assets can be found. When using a relative url,
+   * keep in mind this is relative from the path where your html file is served.
+   * @type {string}
+   */
+  streamingAssetsUrl?: string;
+
   /**
    * You can default your Unity Version. The library may
    * contain future patches for specific Unity versions.