update documentation

Author: tcarecolin

README.rst

@@ -15,16 +15,21 @@ INSTALLATION
 ------------
 
 1. Install flask replicated distribution using ``pip install flask_replicated``.
+   Or add ``flask-replicated==1.4`` in requirements.txt and requirements
+   ``pip3 install -r requirements.txt``.
 
-2. In flask ``app.config`` configure your database bindings a standard way::
+2. Import library ``from flask_replicated import FlaskReplicated`` or
+   ``import flask_replicated`` depending on how you want to call the functions or decorators
+
+3. In flask ``app.config`` configure your database bindings a standard way::
 
        SQLALCHEMY_DATABASE_URI = '%(schema)s://%(user)s:%(password)s@%(master_host)s/%(database)s'
        SQLALCHEMY_BINDS = {
            'master': SQLALCHEMY_DATABASE_URI,
            'slave': '%(schema)s://%(user)s:%(password)s@%(slave_host)s/%(database)s'
        }
 
-3. Register app extension::
+4. Register app extension::
 
        app = Flask(...)
        ...
@@ -48,7 +53,7 @@ To handle these situations wrap appropriate view function with
 ``@flask_replicated.changes_database`` decorator. It will mark function to
 always use master database url.
 
-Conversely, wrap the view function with the ``@use_slave_database``
+Conversely, wrap the view function with the ``@flask_replicated.use_slave_database``
 decorator if you want to ensure that it always uses the slave replica.
 
 GET after POST