update doc

Author: KommuSoft

README.md

@@ -19,6 +19,20 @@ You can install the package with:
 pip install django-adminlink
 ```
 
+You do *not* need to add `'django_adminlink'` to the `INSTALLED_APPS` settings *unless*, you use the `SingleItemActionMixin` or a derived product from it, since then
+you need to make use of the `static/js/single_admin_action.js` file that ships with it. So then the `INSTALLED_APPS` looks like:
+
+```python3
+# settings.py
+
+# …
+
+INSTALLED_APPS = [
+    # …,
+    'django_adminlink'
+]
+```
+
 ## Usage
 
 Once the package is installed, we can work with the mixins provided by the package.

django_adminlink/models.py

@@ -14,3 +14,17 @@ Once the package is installed, you can use the `LinkFieldAdminMixin` mixin in th
        list_display = ['__str__', 'genre']
 
 If `genre` is a `ForeignKey` to a `Genre` model for example, and `Genre` has its own `ModelAdmin`, it will automatically convert `genre` into a column that adds a link to the admin detail view of the corresponding genre.
+
+
+Another option is to use with the `SingleItemActionMixin` to add a button per row to do (one or more) actions for that specific line with:
+
+  ..code-block:: python3
+
+   from django.contrib import admin
+   from django_adminlink.admin import SingleItemActionMixin
+
+   @admin.register(Movie)
+   class MovieAdmin(SingleItemActionMixin, admin.ModelAdmin):
+       action_buttons = {'delete': 'delete_selected'}
+
+here the `action_buttons` is a dictionary (or list) of labels that map to the admin actions. If the label is the same for each admin action, you can use a list, where you thus list the label and admin action only once.

docs/source/getting_started.rst

@@ -8,5 +8,5 @@ The package can be fetched as `django-adminlink`, so for example with `pip` with
    
    pip3 install django-adminlink
 
-The item is not a Django app, so one should *not* to include it in the `INSTALLED_APPS`. It is only a module that
-offers some functionality to use in Django applications.
+The item is a Django app, but you do not per se have to install it as such. If you don't make use of the `SingleItemActionMixin`,
+you don't need to add `'django_adminlink'` to the `INSTALLED_APPS`, otherwise you need to do this to include the static file.