After I worked with 
Following are the steps on how to setup the module from gound up, with a bare bone Raspbian OS.
Hardware setup:
Requirements:
Wiring :
Connect the pins on the right with the Raspberry Pi:
Enable I2C interface:
$ sudo raspi-config
Check I2C address :
$ sudo i2cdetect -y 1
Find the i2c address in the table displayed.
$ sudo pip3 install RPLCD (for python2 use pip)
If you want to use I2C, you also need smbus:
$ sudo apt-get install python3-smbus (for python2 use python-smbus)
$ sudo apt-get update
$ sudo apt-get upgrade
$ git clone https://github.com/xeroc/piston-lib/
$ cd piston-lib
$ python3 setup.py install --user
if you get "fatal error: openssl/aes.h : No such file or directory" error, you may need to install Openssl Development package
$ sudo apt-get install libssl-dev
$ python3 Steem_notify.py
Basically, it monitors the STEEM Blockchain, when there is any activities on the user's account, it will grab it, check if it is an upvote or a comment. If yes, it will blink the LED as well as display upvote or comment information on the 20x4 LCD. Like this:
Here is the notification module on Githut. Feel free to down it and play with it. Anyway suggestion and comments are welcomed!
I am going to expand the devices supported to a few more LCD and LED devices. This would allow users to use it on different hardware application (with different form factor HW designs).
I will in parallel to work on an integration of the module with SteemPi.
Stay tuned!