[chg] Stable version with ISBN

README.md

@@ -1,7 +1,7 @@
 # dj-la-library-system
 Django Library Management System
 
-- `pip install -e git+git://github.com/laborautonomo/dj-la-library-system.git@v0.3.0#egg=dj-la-library-system`
+- `pip install -e git+git://github.com/laborautonomo/dj-la-library-system.git@v0.4.0#egg=dj-la-library-system`
 - Require [django-la-tags - v0.4.0](https://github.com/laborautonomo/django-la-tags/tree/v0.4.0). If not auto install, execute `pip install -e git+git://github.com/laborautonomo/[email protected]#egg=django-la-tags`
 - execute `./manage.py makemigrations && ./manage.py migrate` (this line prevent the error [InvalidBasesError: Cannot resolve bases for...](http://stackoverflow.com/questions/30267237/invalidbaseserror-cannot-resolve-bases-for-modelstate-users-groupproxy))
 - Add `tags.apps.TagsConfig` into `INSTALLED_APPS` of `settings.py`