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/Api/OpenIdAddressTest.php

@@ -0,0 +1,52 @@
+<?php
+namespace PayPal\Test\Api;
+
+use PayPal\Api\OpenIdAddress;
+
+/**
+ * Test class for OpenIdAddress.
+ *
+ */
+class OpenIdAddressTest extends \PHPUnit_Framework_TestCase
+{
+
+    /** @var  OpenIdAddress */
+    private $addr;
+
+    /**
+     * Sets up the fixture, for example, opens a network connection.
+     * This method is called before a test is executed.
+     */
+    protected function setUp()
+    {
+        $this->addr = self::getTestData();
+    }
+
+    /**
+     * Tears down the fixture, for example, closes a network connection.
+     * This method is called after a test is executed.
+     */
+    protected function tearDown()
+    {
+    }
+
+    public static function getTestData()
+    {
+        $addr = new OpenIdAddress();
+        $addr->setCountry("US")->setLocality("San Jose")
+            ->setPostalCode("95112")->setRegion("CA")
+            ->setStreetAddress("1, North 1'st street");
+        return $addr;
+    }
+
+    /**
+     * @test
+     */
+    public function testSerializationDeserialization()
+    {
+        $addrCopy = new OpenIdAddress();
+        $addrCopy->fromJson($this->addr->toJson());
+
+        $this->assertEquals($this->addr, $addrCopy);
+    }
+}