Test spoof emails in travis

tests/EmailValidator/Validation/SpoofCheckValidationTest.php

@@ -13,7 +13,6 @@ class SpoofCheckValidationTest extends TestCase
      */
     public function testUTF8EmailAreValid($email)
     {
-        $this->markTestSkipped("Skipped for Travis CI since it is failing on this test for unknown reasons.");
         $validation = new SpoofCheckValidation();
 
         $this->assertTrue($validation->isValid($email, new EmailLexer()));