Update Readme with a link to the socket client documentation

Author: joelwurtz

README.md

@@ -9,70 +9,16 @@
 
 The socket client use the stream extension from PHP, which is integrated into the core.
 
-## Install
-
-Via Composer
-
-``` bash
-$ composer require php-http/socket-client
-```
-
 ## Features
 
  * TCP Socket Domain (tcp://hostname:port)
  * UNIX Socket Domain (unix:///path/to/socket.sock)
  * TLS / SSL Encyrption
  * Client Certificate (only for php > 5.6)
 
+## Installation and Usage
 
-## Usage
-
-The SocketHttpClient class need a [message factory](https://github.com/php-http/message-factory) in order to work:
-
-```php
-$options = [];
-$client = new new Http\Socket\SocketHttpClient($messageFactory, $options);
-```
-
-The `$options` array allow to configure the socket client.
-
-
-## Options
-
-Here is the list of available options:
-
- * remote_socket: Specify the remote socket where the library should send the request to
-
- Can be a tcp remote : tcp://hostname:port
-
- Can be a unix remote : unix://hostname:port
-
- Do not use a tls / ssl scheme, this is handle by the ssl option.
-
- If not set, the client will try to determine it from the request uri or host header.
-
- * timeout : Timeout in __milliseconds__ for writing request and reading response on the remote
- * ssl : Activate or deactivate the ssl / tls encryption
- * stream_context_options : Custom options for the context of the stream, same as [PHP stream context options](http://php.net/manual/en/context.php)
-
- As an example someone may want to pass a client certificate when using the ssl, a valid configuration for this
- use case would be:
-
- ```php
- $options = [
-    'stream_context_options' => [
-        'ssl' => [
-            'local_cert' => '/path/to/my/client-certificate.pem'
-        ]
-    ]
- ]
- $client = new Http\Socket\SocketHttpClient($messageFactory, $options);
- ```
-
- * stream_context_params : Custom parameters for the context of the stream, same as [PHP stream context parameters](http://php.net/manual/en/context.params.php)
- * write_buffer_size : When sending the request we need to bufferize the body, this option specify the size of this buffer, default is 8192,
- if you are sending big file with your client it may be interesting to have a bigger value in order to increase performance.
-
+[Read the documentation at http://docs.php-http.org/en/latest/clients/socket-client.html](http://docs.php-http.org/en/latest/clients/socket-client.html)
 
 ## Testing