Use composer for test suite

.gitignore

@@ -0,0 +1,5 @@
+phpunit.xml
+vendor
+composer.lock
+composer.phar
+

.travis.yml

@@ -9,4 +9,5 @@ before_script:
   - tar -xzf mongo-1.2.7.tgz
   - sh -c "cd mongo-1.2.7 && phpize && ./configure --enable-mongo && make && sudo make install"
   - echo "extension=mongo.so" >> `php --ini | grep "Loaded Configuration" | sed -e "s|.*:\s*||"`
-  - git submodule update --init
+  - wget -nc http://getcomposer.org/composer.phar
+  - php composer.phar install

tests/bootstrap.php

@@ -1,14 +1,13 @@
 <?php
 
-require_once __DIR__ . '/../lib/vendor/doctrine-common/lib/Doctrine/Common/ClassLoader.php';
+$file = __DIR__.'/../vendor/autoload.php';
+if (!file_exists($file)) {
+    throw new RuntimeException('Install dependencies to run test suite.');
+}
+
+require_once $file;
 
 use Doctrine\Common\ClassLoader;
 
 $classLoader = new ClassLoader('Doctrine\MongoDB\Tests', __DIR__ . '/../tests');
 $classLoader->register();
-
-$classLoader = new ClassLoader('Doctrine\MongoDB', __DIR__ . '/../lib');
-$classLoader->register();
-
-$classLoader = new ClassLoader('Doctrine\Common', __DIR__ . '/../lib/vendor/doctrine-common/lib');
-$classLoader->register();