remove duplicated code examples from README

Author: alexeyraspopov

README.md

@@ -27,70 +27,7 @@ export default Coroutine.create(UserListContainer);
 
 ## Usage
 
-Inject variables to a coroutine:
+See [docs](./docs/) for more.
 
-```javascript
-function getVariables(props) {
-  return {
-    posts: new PostsDAO(props.userId),
-  };
-}
-
-async function PostListContainer({ posts }) {
-  try {
-    return <PostList posts={await posts.retrieve()} />
-  } catch (error) {
-    return <ErrorMessage error={error} />
-  }
-}
-
-export default Coroutine.create(PostListCo, getVariables);
-```
-
-And use it as a component:
-
-```javascript
-<PostListContainer userId={...} />
-```
-
-Async generators as components:
-
-```javascript
-async function* CommentListContainer() {
-  yield <LoadingSpinner />;
-
-  try {
-    const comments = await CommentsDAO.retrieve();
-    return <CommentList comments={comments} />;
-  } catch (error) {
-    return <ErrorMessage error={error} />;
-  }
-}
-
-export default Coroutine.create(CommentListContainer);
-```
-
-```javascript
-async function* EventStreamContainer() {
-  for await (const message of dispatcher) {
-    yield <p>Last message {message.type}</p>;
-  }
-}
 
-export default Coroutine.create(EventStreamContainer);
-```
 
-```javascript
-async function* List() {
-  try {
-    const items = await Items.retrieve();
-    yield <ItemList items={items} />;
-    const additionalInfo = await Info.retrieve();
-    return <ItemList items={items} info={info} />;
-  } catch (error) {
-    return <p>...</p>;
-  }
-}
-
-export default Coroutine.create(List);
-```