Add information about query strings

It was not obvious to me that you could use the second array argument with `Http::get()` for query parameters. I found it buried in a GitHub issue so I thought to add it to the docs.

Author: djam90

http-client.md

@@ -51,13 +51,22 @@ The `Illuminate\Http\Client\Response` object also implements the PHP `ArrayAcces
 <a name="request-data"></a>
 ### Request Data
 
-Of course, it is common when using `POST`, `PUT`, and `PATCH` to send additional data with your request. So, these methods accept an array of data as their second argument. By default, data will be sent using the `application/json` content type:
+Of course, it is common when using `GET`, `POST`, `PUT`, and `PATCH` to send additional data with your request. So, these methods accept an array of data as their second argument. By default, data will be sent using the `application/json` content type:
 
     $response = Http::post('http://test.com/users', [
         'name' => 'Steve',
         'role' => 'Network Administrator',
     ]);
 
+#### GET Requests Query Parameters
+
+If you would like to send data using query parameters, you can either append the query string to the URL or pass an array of data to the second argument. When using the second argument with an array of data, this will automatically be parsed into the correct query string format, such as `http://test.com/users?page=1&query=Taylor`.
+
+    $response = Http::get('http://test.com/users', [
+        'page' => 1,
+        'query' => 'Taylor',
+    ]);
+
 #### Sending Form URL Encoded Requests
 
 If you would like to send data using the `application/x-www-form-urlencoded` content type, you should call the `asForm` method before making your request: