Renaming Namespaces and Organizing Classes

- Updated OpenId classes to be in API namespace
- Updated PP Naming Convention to PayPal Naming Convention
- FormatConverter Class got its own namespace
- Handlers are grouped in Handler namespace
- Samples and Tests Updated Accordingly

tests/PayPal/Test/Common/ArrayUtilTest.php

@@ -1,24 +1,24 @@
-<?php
-namespace PayPal\Test\Common;
-
-use PayPal\Common\PPArrayUtil;
-
-class ArrayUtilTest extends \PHPUnit_Framework_TestCase
-{
-
-    public function testIsAssocArray()
-    {
-
-        $arr = array(1, 2, 3);
-        $this->assertEquals(false, PPArrayUtil::isAssocArray($arr));
-
-        $arr = array(
-            'name' => 'John Doe',
-            'City' => 'San Jose'
-        );
-        $this->assertEquals(true, PPArrayUtil::isAssocArray($arr));
-
-        $arr[] = 'CA';
-        $this->assertEquals(false, PPArrayUtil::isAssocArray($arr));
-    }
-}
+<?php
+namespace PayPal\Test\Common;
+
+use PayPal\Common\ArrayUtil;
+
+class ArrayUtilTest extends \PHPUnit_Framework_TestCase
+{
+
+    public function testIsAssocArray()
+    {
+
+        $arr = array(1, 2, 3);
+        $this->assertEquals(false, ArrayUtil::isAssocArray($arr));
+
+        $arr = array(
+            'name' => 'John Doe',
+            'City' => 'San Jose'
+        );
+        $this->assertEquals(true, ArrayUtil::isAssocArray($arr));
+
+        $arr[] = 'CA';
+        $this->assertEquals(false, ArrayUtil::isAssocArray($arr));
+    }
+}