docs: Update CANalyst-II interface description (#179) (#180)

diff --git a/pyuavcan/VERSION b/pyuavcan/VERSION
index db6fb4a..9d4f823 100644
--- a/pyuavcan/VERSION
+++ b/pyuavcan/VERSION
@@ -1 +1 @@
-1.2.8
+1.2.9
diff --git a/pyuavcan/transport/can/media/pythoncan/_pythoncan.py b/pyuavcan/transport/can/media/pythoncan/_pythoncan.py
index 6758be1..fd4db01 100644
--- a/pyuavcan/transport/can/media/pythoncan/_pythoncan.py
+++ b/pyuavcan/transport/can/media/pythoncan/_pythoncan.py
@@ -88,6 +88,9 @@
 
             - Interface ``canalystii`` is described in
               https://python-can.readthedocs.io/en/stable/interfaces/canalystii.html.
+              You need to download CANalyst library for python-can package or you can install python-can by:
+              ``pip3 install git+https://github.com/Cherish-Gww/python-can.git@add_canalystii_so``
+              More info: https://github.com/UAVCAN/pyuavcan/issues/178#issuecomment-912497882
               Example: ``canalystii:0``
 
         :param bitrate: Bit rate value in bauds; either a single integer or a tuple: