Create initial migration

[prokaktus]

After installing app, if I ran:

$ ./manage.py makemigrations
    No changes detected

This is because every app should have initial migration after Django 1.6. So, I should explicitly ran makemigrations with the app label:

$ ./manage.py makemigrations djangoseo
Migrations for 'djangoseo':
  0001_initial.py:
    - Create model EntryMetadataModel
    - Create model EntryMetadataModelInstance
    - Create model EntryMetadataPath
    - Create model EntryMetadataView
    - Alter unique_together for entrymetadataview (1 constraint(s))
    - Alter unique_together for entrymetadatapath (1 constraint(s))
    - Alter unique_together for entrymetadatamodelinstance (2 constraint(s))
    - Alter unique_together for entrymetadatamodel (1 constraint(s))