Added searchWithParameters function

.gitignore

@@ -3,3 +3,5 @@
 *.project
 testSettings.php
 sampleSettings.php
+
+.DS_Store

README.markdown

@@ -1,4 +1,4 @@
-#Amazon ECS PHP Library Version 1.3
+# Amazon ECS PHP Library Version 1.3
 AmazonECS is a class which searchs products and fetchs information
 about it from tha amazon productdatabase.
 
@@ -15,7 +15,7 @@ These operations could be expanded with extra prarmeters to specialize the query
 
 Requirement is the PHP extension SOAP.
 
-##Basic Usage:
+## Basic Usage:
 The usage is quite simple.
 Just require the class, create a new object of it and it's ready to use.
 Nothing else to configure.
@@ -35,13 +35,13 @@ var_dump($response);
 For some very simple examples go to the samples-folder and have a look at the sample files.
 These files contain all information you need for building querys successful.
 
-##Demo Site:
+## Demo Site:
 Simple Produkt Search: http://amazonecs.pixel-web.org
 
-##Webservice Documentation:
+## Webservice Documentation:
 Hosted on Amazon.com:
 http://docs.amazonwebservices.com/AWSECommerceService/latest/DG/
 
-##More information:
+## More information:
 See wikipages for  more information:
-https://github.com/Exeu/Amazon-ECS-PHP-Library/wiki
+https://github.com/Exeu/Amazon-ECS-PHP-Library/wiki

lib/AmazonECS.class.php

@@ -86,7 +86,7 @@ public function __construct($accessKey, $secretKey, $country, $associateTag)
   /**
    * execute search
    *
-   * @param string $pattern
+   * @param string $pattern|$array (key/value)
    *
    * @return array|object return type depends on setting
    *
@@ -104,20 +104,32 @@ public function search($pattern, $nodeId = null)
     {
       $browseNode = array('BrowseNode' => $nodeId);
     }
+
+    $ItemSearchRequest = array();
+
+    $ItemSearchRequest['SearchIndex'] = $this->requestConfig['category'];
+
+    if(is_array( $pattern ))
+    {
+    	foreach($pattern as $key => $value)
+    	{
+    		$ItemSearchRequest[$key] = $value;
+    	}
+
+	} else {
+		$ItemSearchRequest['Keywords'] = $pattern;
+	}
 
     $params = $this->buildRequestParams('ItemSearch', array_merge(
-      array(
-        'Keywords' => $pattern,
-        'SearchIndex' => $this->requestConfig['category']
-      ),
+      $ItemSearchRequest,
       $browseNode
     ));
 
     return $this->returnData(
       $this->performSoapRequest("ItemSearch", $params)
     );
   }
-
+  
   /**
    * execute ItemLookup request
    *