WIP universial support

Author: niemyjski

dist/exceptionless.d.ts

@@ -531,3 +531,5 @@ export declare class BrowserStorageProvider implements IStorageProvider {
 export declare class DefaultSubmissionAdapter implements ISubmissionAdapter {
     sendRequest(request: SubmissionRequest, callback?: SubmissionCallback, isAppExiting?: boolean): void;
 }
+export declare function isBrowser(): boolean;
+export declare function browserInit(): void;