Update README.md

Author: clue

README.md

@@ -52,15 +52,15 @@ throughout React's ecosystem.
 Most higher-level components (such as HTTP, database or other networking
 service clients) accept an instance implementing this interface to create their
 TCP/IP connection to the underlying networking service.
-This is usually done via dependency injection, so its fairly simple to actually
+This is usually done via dependency injection, so it's fairly simple to actually
 swap this implementation against this library in order to connect through an
 HTTP CONNECT proxy.
 
 The interface only offers a single method:
 
 #### create()
 
-The `create(string $host, int $port): PromiseInterface<Stream>` method
+The `create(string $host, int $port): PromiseInterface<Stream, Exception>` method
 can be used to establish a streaming connection.
 It returns a [Promise](https://github.com/reactphp/promise) which either
 fulfills with a [Stream](https://github.com/reactphp/stream) or