diff --git a/.gitignore b/.gitignore
index 1bfc2315..3b5992e5 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,3 +4,5 @@ phpunit.xml
 .idea
 /examples/vendor
 /tests/_output
+examples/public.key
+examples/private.key
diff --git a/examples/README.md b/examples/README.md
index 884da28b..e4a30a73 100644
--- a/examples/README.md
+++ b/examples/README.md
@@ -1,3 +1,54 @@
 # Example implementations
 
-Just run `composer install --no-dev` in this directory to get started.
\ No newline at end of file
+## Installation
+
+0. Run `composer install --no-dev` in this directory to install dependencies
+0. Create a private key `openssl genrsa -out private.key 1024`
+0. Create a public key `openssl rsa -in private.key -pubout > public.key`
+0. `cd` into the public directory
+0. Start a PHP server `php -S localhost:4444`
+
+## Testing the client credentials grant example
+
+Send the following cURL request:
+
+```
+curl -X "POST" "http://localhost:4444/client_credentials.php/access_token" \
+	-H "Content-Type: application/x-www-form-urlencoded" \
+	-H "Accept: 1.0" \
+	--data-urlencode "client_id=myawesomeapp" \
+	--data-urlencode "scope=basic email" \
+	--data-urlencode "client_secret=abc123" \
+	--data-urlencode "grant_type=client_credentials"
+```
+
+## Testing the password grant example
+
+Send the following cURL request:
+
+```
+curl -X "POST" "http://localhost:4444/password.php/access_token" \
+	-H "Content-Type: application/x-www-form-urlencoded" \
+	-H "Accept: 1.0" \
+	--data-urlencode "client_id=myawesomeapp" \
+	--data-urlencode "scope=basic email" \
+	--data-urlencode "username=alex" \
+	--data-urlencode "password=whisky" \
+	--data-urlencode "client_secret=abc123" \
+	--data-urlencode "grant_type=password"
+```
+
+## Testing the refresh token grant example
+
+Send the following cURL request. Replace `{{REFRESH_TOKEN}}` with a refresh token from another grant above:
+
+```
+curl -X "POST" "http://localhost:4444/refresh_token.php/access_token" \
+	-H "Content-Type: application/x-www-form-urlencoded" \
+	-H "Accept: 1.0" \
+	--data-urlencode "grant_type=refresh_token" \
+	--data-urlencode "client_id=myawesomeapp" \
+	--data-urlencode "client_secret=abc123" \
+	--data-urlencode "refresh_token={{REFRESH_TOKEN}}"
+```
+
diff --git a/examples/public/refresh_token.php b/examples/public/refresh_token.php
new file mode 100644
index 00000000..75c08139
--- /dev/null
+++ b/examples/public/refresh_token.php
@@ -0,0 +1,56 @@
+<?php
+
+use League\OAuth2\Server\Exception\OAuthServerException;
+use League\OAuth2\Server\Grant\RefreshTokenGrant;
+use League\OAuth2\Server\Server;
+
+use OAuth2ServerExamples\Repositories\AccessTokenRepository;
+use OAuth2ServerExamples\Repositories\ClientRepository;
+use OAuth2ServerExamples\Repositories\RefreshTokenRepository;
+use OAuth2ServerExamples\Repositories\ScopeRepository;
+use OAuth2ServerExamples\Repositories\UserRepository;
+
+use Slim\App;
+use Slim\Http\Request;
+use Slim\Http\Response;
+
+include(__DIR__ . '/../vendor/autoload.php');
+
+// Setup the authorization server
+$server = new Server('file://' . __DIR__ . '/../private.key');
+
+// Init our repositories
+$userRepository = new UserRepository();
+$clientRepository = new ClientRepository();
+$scopeRepository = new ScopeRepository();
+$accessTokenRepository = new AccessTokenRepository();
+$refreshTokenRepository = new RefreshTokenRepository();
+
+// Enable the client credentials grant on the server
+$refreshTokenGrant = new RefreshTokenGrant(
+    'file://' . __DIR__ . '/../public.key',
+    $clientRepository,
+    $scopeRepository,
+    $accessTokenRepository,
+    $refreshTokenRepository
+);
+$server->enableGrantType($refreshTokenGrant);
+
+// App
+$app = new App([Server::class => $server]);
+
+$app->post('/access_token', function (Request $request, Response $response) {
+    /** @var Server $server */
+    $server = $this->get(Server::class);
+    try {
+        return $server->respondToRequest($request);
+    } catch (OAuthServerException $e) {
+        return $e->generateHttpResponse();
+    } catch (\Exception $e) {
+        return $response->withStatus(500)->write(
+            sprintf('<h1>%s</h1><p>%s</p>', get_class($e), $e->getMessage())
+        );
+    }
+});
+
+$app->run();
diff --git a/examples/src/Repositories/AccessTokenRepository.php b/examples/src/Repositories/AccessTokenRepository.php
index 16d8dc2b..bc8ada68 100644
--- a/examples/src/Repositories/AccessTokenRepository.php
+++ b/examples/src/Repositories/AccessTokenRepository.php
@@ -2,51 +2,39 @@
 namespace OAuth2ServerExamples\Repositories;
 
 use League\OAuth2\Server\Entities\Interfaces\AccessTokenEntityInterface;
-use League\OAuth2\Server\Entities\Interfaces\ScopeEntityInterface;
 use League\OAuth2\Server\Repositories\AccessTokenRepositoryInterface;
 
 class AccessTokenRepository implements AccessTokenRepositoryInterface
 {
-
     /**
-     * @inheritdoc
-     */
-    public function getAccessTokenEntityByTokenString($tokenIdentifier)
-    {
-        // TODO: Implement get() method.
-    }
-
-    /**
-     * @inheritdoc
-     */
-    public function getScopeEntitiesAssociatedWithAccessToken(AccessTokenEntityInterface $token)
-    {
-        // TODO: Implement getScopes() method.
-    }
-
-    /**
-     * @inheritdoc
+     * Persists a new access token to permanent storage
+     *
+     * @param \League\OAuth2\Server\Entities\Interfaces\AccessTokenEntityInterface $accessTokenEntity
      */
     public function persistNewAccessToken(AccessTokenEntityInterface $accessTokenEntity)
     {
-        // TODO: Implement create() method.
+        // TODO: Implement persistNewAccessToken() method.
     }
 
     /**
-     * @inheritdoc
+     * Revoke an access token
+     *
+     * @param string $tokenId
      */
-    public function associateScopeWithAccessToken(
-        AccessTokenEntityInterface $accessTokenEntityInterface,
-        ScopeEntityInterface $scope
-    ) {
-        // TODO: Implement associateScope() method.
-    }
-
-    /**
-     * @inheritdoc
-     */
-    public function deleteAccessToken(AccessTokenEntityInterface $accessToken)
+    public function revokeAccessToken($tokenId)
     {
-        // TODO: Implement delete() method.
+        // TODO: Implement revokeAccessToken() method.
+    }
+
+    /**
+     * Check if the access token has been revoked
+     *
+     * @param string $tokenId
+     *
+     * @return bool Return true if this token has been revoked
+     */
+    public function isAccessTokenRevoked($tokenId)
+    {
+        // TODO: Implement isAccessTokenRevoked() method.
     }
 }
diff --git a/examples/src/Repositories/RefreshTokenRepository.php b/examples/src/Repositories/RefreshTokenRepository.php
new file mode 100644
index 00000000..a7a4e079
--- /dev/null
+++ b/examples/src/Repositories/RefreshTokenRepository.php
@@ -0,0 +1,42 @@
+<?php
+
+namespace OAuth2ServerExamples\Repositories;
+
+use League\OAuth2\Server\Entities\Interfaces\RefreshTokenEntityInterface;
+use League\OAuth2\Server\Repositories\RefreshTokenRepositoryInterface;
+
+class RefreshTokenRepository implements RefreshTokenRepositoryInterface
+{
+
+    /**
+     * Create a new refresh token_name
+     *
+     * @param \League\OAuth2\Server\Entities\Interfaces\RefreshTokenEntityInterface $refreshTokenEntityInterface
+     */
+    public function persistNewRefreshToken(RefreshTokenEntityInterface $refreshTokenEntityInterface)
+    {
+        // TODO: Implement persistNewRefreshToken() method.
+    }
+
+    /**
+     * Revoke the refresh token
+     *
+     * @param string $tokenId
+     */
+    public function revokeRefreshToken($tokenId)
+    {
+        // TODO: Implement revokeRefreshToken() method.
+    }
+
+    /**
+     * Check if the refresh token has been revoked
+     *
+     * @param string $tokenId
+     *
+     * @return bool Return true if this token has been revoked
+     */
+    public function isRefreshTokenRevoked($tokenId)
+    {
+        // TODO: Implement isRefreshTokenRevoked() method.
+    }
+}