update readme

README.md

@@ -4,51 +4,30 @@ pyrad3 is an implementation of a RADIUS client/server as described in RFC2865.
 It takes care of all the details like building RADIUS packets, sending them and
 decoding responses.
 
-This is the successor of pyrad. It is written in python3 only (python3.6+) and
+This is the successor of pyrad. It is written in python3 only (python3.7+) and
 has an improved API.
 
-Here is an example of doing a authentication request:
-
-```python3
-from pyrad.client import Client
-from pyrad.dictionary import Dictionary
-import pyrad.packet
-
-srv = Client(server="localhost", secret=b"Kah3choteereethiejeimaeziecumi",
-             dict=Dictionary("dictionary"))
-
-# create request
-req = srv.CreateAuthPacket(code=pyrad.packet.AccessRequest,
-                           User_Name="wichert", NAS_Identifier="localhost")
-req["User-Password"] = req.PwCrypt("password")
-
-# send request
-reply = srv.SendPacket(req)
-
-if reply.code == pyrad.packet.AccessAccept:
-    print("access accepted")
-else:
-    print("access denied")
-
-print("Attributes returned by server:")
-for key, values in reply.items():
-    print("{key}: {value}")
-```
-
 ## Requirements & Installation
 
-pyrad requires Python 3.6 or later.
+pyrad requires Python 3.7 or later.
 
 ```cli
-# Install from the repository
-pip install .
 # Install from pypi
 pip install pyrad3
+
+# Install from the repository
+git clone https://github.com/pyradius/pyrad3
+pip install .
+
+# Installing with poetry
+git clone https://github.com/pyradius/pyrad3
+poetry install --no-dev # for usage; without optional dev dependencies
+poetry install # for development
 ```
 
 ## License
 
-pyrad3 is distributed under the terms of both the MIT license and the Apache
+pyrad3 is distributed under the terms of both the MIT License and the Apache
 License (Version 2.0).
 
 See [LICENSE-APACHE](LICENSE-APACHE) and [LICENSE-MIT](LICENSE-MIT) for