Fix named keys on Schema columns.

Signed-off-by: Phill Sparks <me@phills.me.uk>

laravel/database/schema.php

@@ -120,10 +120,17 @@ class Schema {
 		{
 			foreach (array('primary', 'unique', 'fulltext', 'index') as $key)
 			{
-				if (isset($column->attributes[$key]))
+				if (isset($column->$key))
+				{
+					if ($column->$key === true)
 					{
 						$table->$key($column->name);
 					}
+					else
+					{
+						$table->$key($column->name, $column->$key);
+					}
+				}
 			}
 		}
 	}