update gitignore

.gitignore

@@ -1,3 +1,4 @@
+
 # Byte-compiled / optimized / DLL files
 __pycache__/
 *.py[cod]
@@ -60,6 +61,8 @@ coverage.xml
 local_settings.py
 db.sqlite3
 db.sqlite3-journal
+*/migrations/*.py
+!*/migrations/__init__.py
 
 # Flask stuff:
 instance/