diff --git a/README.md b/README.md
index 4d86104..5737a26 100644
--- a/README.md
+++ b/README.md
@@ -19,6 +19,9 @@ Here is a very simple example of using this package:
 ```php
 <?php
 
+// if you are in a standalone page, uncomment the following line
+// include 'vendor/autoload.php';
+
 use Frlnc\Slack\Http\SlackResponseFactory;
 use Frlnc\Slack\Http\CurlInteractor;
 use Frlnc\Slack\Core\Commander;
@@ -26,6 +29,7 @@ use Frlnc\Slack\Core\Commander;
 $interactor = new CurlInteractor;
 $interactor->setResponseFactory(new SlackResponseFactory);
 
+// see doc/Toekn.md for more informations
 $commander = new Commander('xoxp-some-token-for-slack', $interactor);
 
 $response = $commander->execute('chat.postMessage', [
@@ -33,7 +37,9 @@ $response = $commander->execute('chat.postMessage', [
     'text'    => 'Hello, world!'
 ]);
 
-if ($response['ok'])
+$responseBody = $response->getBody();
+
+if ($responseBody && responseBody['ok'])
 {
     // Command worked
 }
diff --git a/doc/README.md b/doc/README.md
new file mode 100644
index 0000000..74fe4a3
--- /dev/null
+++ b/doc/README.md
@@ -0,0 +1,2 @@
+* TOKEN.md Get the token for communication with API of slack
+
diff --git a/doc/TOKEN.md b/doc/TOKEN.md
new file mode 100644
index 0000000..13560ca
--- /dev/null
+++ b/doc/TOKEN.md
@@ -0,0 +1,8 @@
+To communicate through the API of Slack, you need a token. Here is the way to get it.
+
+1. Go to https://api.slack.com/
+2. In "Authentication" section, click on generate token.
+3. This is your token, change in sample 'xoxp-some-token-for-slack' by the one you just receive.
+
+
+
diff --git a/src/Contracts/Http/Response.php b/src/Contracts/Http/Response.php
index b495f32..c87893e 100644
--- a/src/Contracts/Http/Response.php
+++ b/src/Contracts/Http/Response.php
@@ -5,7 +5,7 @@ interface Response {
     /**
      * Gets the body of the response.
      *
-     * @return string
+     * @return array
      */
     public function getBody();
 
diff --git a/src/Http/SlackResponse.php b/src/Http/SlackResponse.php
index dccfdfb..34e6939 100644
--- a/src/Http/SlackResponse.php
+++ b/src/Http/SlackResponse.php
@@ -5,7 +5,7 @@ class SlackResponse implements \Frlnc\Slack\Contracts\Http\Response, \JsonSerial
     /**
      * The response body.
      *
-     * @var string
+     * @var array
      */
     protected $body;