[zendframework/zendframework#5029] incorporate feedback

- lowercase "origin" in plugin loader
- remove unnecessary lines in test class

src/HeaderLoader.php

@@ -56,7 +56,7 @@ class HeaderLoader extends PluginClassLoader
         'lastmodified'       => 'Zend\Http\Header\LastModified',
         'location'           => 'Zend\Http\Header\Location',
         'maxforwards'        => 'Zend\Http\Header\MaxForwards',
-        'Origin'             => 'Zend\Http\Header\Origin',
+        'origin'             => 'Zend\Http\Header\Origin',
         'pragma'             => 'Zend\Http\Header\Pragma',
         'proxyauthenticate'  => 'Zend\Http\Header\ProxyAuthenticate',
         'proxyauthorization' => 'Zend\Http\Header\ProxyAuthorization',

test/Header/OriginTest.php

@@ -13,7 +13,6 @@
 
 class OriginTest extends \PHPUnit_Framework_TestCase
 {
-
     public function testOriginFromStringCreatesValidOriginHeader()
     {
         $OriginHeader = Origin::fromString('Origin: http://zend.org');
@@ -44,7 +43,4 @@ public function testOriginToStringReturnsHeaderFormattedString()
         // @todo set some values, then test output
         $this->assertEmpty('Origin: http://zend.org', $OriginHeader->toString());
     }
-
-    /** Implmentation specific tests here */
-
 }