Let the builder pass the raw method, fixes #157

src/Jenssegers/Mongodb/Eloquent/Builder.php

@@ -9,7 +9,7 @@ class Builder extends \Illuminate\Database\Eloquent\Builder {
      */
     protected $passthru = array(
         'toSql', 'lists', 'insert', 'insertGetId', 'pluck',
-        'count', 'min', 'max', 'avg', 'sum', 'exists', 'push', 'pull'
+        'count', 'min', 'max', 'avg', 'sum', 'exists', 'push', 'pull', 'raw'
     );
 
 }

tests/QueryBuilderTest.php

@@ -195,6 +195,9 @@ class QueryBuilderTest extends PHPUnit_Framework_TestCase {
 		$collection = DB::collection('users')->raw();
 		$this->assertInstanceOf('MongoCollection', $collection);
 
+		$collection = User::raw();
+		$this->assertInstanceOf('MongoCollection', $collection);
+
 		$results = DB::collection('users')->whereRaw(array('age' => 20))->get();
 		$this->assertEquals(1, count($results));
 		$this->assertEquals('Jane Doe', $results[0]['name']);