Merged in cblume/alembic (pull request #24)

Changes in MigrationContext and ScriptDirectory

diff --cc alembic/migration.py
index 850bbd14225e929b8ff2c74a71682b8e179efe2a,67f3972374b3937c9b064315a831edad8131655a..60f22a34422df2ca25aa341c5ed3c0ebdbde6363
--- 1/alembic/migration.py
--- 2/alembic/migration.py
+++ b/alembic/migration.py
@@@ -79,10 -75,13 +79,12 @@@ class MigrationContext(object)
          self._user_compare_server_default = opts.get(
                                              'compare_server_default',
                                              False)
 -
          version_table = opts.get('version_table', 'alembic_version')
+         version_table_schema = opts.get('version_table_schema', None)
          self._version = Table(
              version_table, MetaData(),
-             Column('version_num', String(32), nullable=False))
+             Column('version_num', String(32), nullable=False),
+             schema=version_table_schema)
  
          self._start_from_rev = opts.get("starting_rev")
          self.impl = ddl.DefaultImpl.get_by_dialect(dialect)(