diff --git a/EANSearch.php b/EANSearch.php
index a9ed3b6..6b4f174 100644
--- a/EANSearch.php
+++ b/EANSearch.php
@@ -1,5 +1,14 @@
 <?php
 
+/*
+ * A PHP class for EAN and ISBN name lookup and validation using the API on ean-search.org
+ *
+ * (c) Jan Willamowius, 2017
+ *     Relaxed Communications GmbH, 2017
+ *     https://www.ean-search.org/ean-database-api.html
+ *
+ */
+
 class EANSearch {
 	private $accessToken;
 
@@ -18,14 +27,14 @@ function barcodePrefixSearch($prefix, $page = 0) {
 		$xml = file_get_contents("https://api.ean-search.org/api?"
 			. "op=barcode-prefix-search&token=$this->accessToken&prefix=$prefix&page=$page");
 		$response = new SimpleXMLElement($xml);
-		return $response->product;
+		return $response->xpath('//product');
 	}
 
 	function productSearch($name, $page = 0) {
 		$xml = file_get_contents("https://api.ean-search.org/api?"
 			. "op=product-search&token=$this->accessToken&name=$name&page=$page");
 		$response = new SimpleXMLElement($xml);
-		return $response->product;
+		return $response->xpath('//product');
 	}
 
 	function barcodeImage($ean) {
diff --git a/README.md b/README.md
index e55aaf7..5bcd640 100644
--- a/README.md
+++ b/README.md
@@ -1 +1,26 @@
 # ean-search
+
+## Initialization
+	// your access token from ean-search.org
+	$accessToken = 'abcdef';
+
+	$eanSearch = new EANSearch($accessToken);
+
+## Usage
+	$ean = '5099750442227';
+	$name = $eanSearch->barcodeLookup($ean);
+	echo "$ean is $name\n";
+
+	$ok = $eanSearch->verifyChecksum($ean);
+	echo "$ean is " . ($ok ? 'valid' : 'invalid') . "\n";
+
+	$eanList = $eanSearch->productSearch('iPod');
+	foreach ($eanList as $product) {
+		echo "$product->ean is $product->name\n";
+	}
+
+	$eanList = $eanSearch->barcodePrefixSearch(4007249146);
+	foreach ($eanList as $product) {
+		echo "$product->ean is $product->name\n";
+	}
+