Updating Travis CI config and skipping tests for 32-bit builds.

.travis.yml

@@ -6,6 +6,6 @@ php:
 
 before_script:
   - curl -s http://getcomposer.org/installer | php -- --quiet
-  - php composer.phar install
+  - php composer.phar install --dev
 
 script: phpunit -c phpunit.xml.dist

tests/Rhumsaa/Uuid/Doctrine/UuidTypeTest.php

@@ -17,6 +17,13 @@ class UuidTypeTest extends PHPUnit_Framework_TestCase
 
     protected function setUp()
     {
+        // Skip these tests if run on a 32-bit build of PHP
+        if (PHP_INT_SIZE == 4) {
+            $this->markTestSkipped(
+                'Running tests on a 32-bit build of PHP; 64-bit build required.'
+            );
+        }
+
         $this->platform = new MockPlatform();
         $this->type = Type::getType('uuid');
     }