Reverting export style + fix contributing.md

Author: Michael Cohen

contributing.md

@@ -67,10 +67,10 @@ While developing and debugging changes to this SDK, you can 'test-run' them loca
    npm link
    ```
 
-2. In your other package's root directory, make sure to remove `next` from `node_modules` with:
+2. In your other package's root directory, make sure to remove `@opensea/stream-js` from `node_modules` with:
 
    ```sh
-   rm -rf ./node_modules/next
+   rm -rf ./node_modules/@opensea/stream-js
    ```
 
 3. In your other package's root directory, run:

src/index.ts

@@ -1,7 +1,2 @@
-import { OpenSeaStreamClient } from './client';
-import * as OpenSeaStreamTypes from './types';
-
-export default {
-  client: OpenSeaStreamClient,
-  types: OpenSeaStreamTypes
-};
+export * from './client';
+export * from './types';