Each web framework has its own installation command

Author: rayluo

README.md

@@ -118,7 +118,10 @@ Read our [docs here](https://identity-library.readthedocs.io/en/latest/)
 ## Installation
 
 This package is [available on PyPI](https://pypi.org/project/identity/).
-You can install it by `pip install identity`.
+Choose the package declaration that matches your web framework:
+
+* Django: `pip install identity[django]`
+* Flask: `pip install identity[flask]`
 
 ## Versions
 

docs/django.rst

@@ -22,10 +22,12 @@ as a reference. What we need are basically these steps:
     def index(request):
         return HttpResponse("Hello, world. Everyone can read this line.")
 
-Django configuration
---------------------
+Identity-for-Django configuration
+---------------------------------
 
-#. Firstly, create an instance of the :py:class:`identity.django.Auth` object,
+#. Install dependency by ``pip install identity[django]``
+
+#. Create an instance of the :py:class:`identity.django.Auth` object,
    and assign it to a global variable inside your ``settings.py``::
 
     import os

docs/flask.rst

@@ -8,8 +8,10 @@ Create `a hello world web project in Flask <https://flask.palletsprojects.com/en
 Here we assume the project's main file is named ``app.py``.
 
 
-Flask configuration
--------------------
+Identity-for-Flask configuration
+--------------------------------
+
+#. Install dependency by ``pip install identity[flask]``
 
 #. Add an ``app_config.py`` file containing the following::
 

setup.cfg

@@ -55,6 +55,8 @@ include_package_data = True
 flask =
     # If Flask-Session is not maintained in future, Flask-Session2 should work as well
     Flask-Session>=0.3.2,<0.6
+django =
+    # Placeholder, in case we will introduce Django-relevant dependency in the future
 
 [options.entry_points]
 # See also https://setuptools.readthedocs.io/en/latest/userguide/entry_point.html