Audio media type initial migration.

* mediagoblin/media_types/audio/migrations/e9212d3a12d3_adding_audio_media_type_initial_.py:
  New file.

mediagoblin/media_types/audio/migrations/e9212d3a12d3_adding_audio_media_type_initial_.py

@@ -0,0 +1,32 @@
+"""Audio media type initial migration
+
+Revision ID: e9212d3a12d3
+Revises: 52bf0ccbedc1
+Create Date: 2016-03-12 22:37:35.086080
+"""
+
+# revision identifiers, used by Alembic.
+revision = 'e9212d3a12d3'
+down_revision = '52bf0ccbedc1'
+branch_labels = ('audio_media_type',)
+depends_on = None
+
+from alembic import op
+import sqlalchemy as sa
+
+
+def upgrade():
+    if op.get_bind().engine.has_table("audio__mediadata"):
+        # Skip; this has already been instantiated
+        # (probably via sqlalchemy-migrate)
+        return
+
+    op.create_table(
+        'audio__mediadata',
+        sa.Column('media_entry', sa.Integer(), nullable=False),
+        sa.ForeignKeyConstraint(['media_entry'], ['core__media_entries.id'], ),
+        sa.PrimaryKeyConstraint('media_entry'))
+
+
+def downgrade():
+    op.drop_table('audio__mediadata')