Web UI testing script (Selenium)

Small piece of web test script that browses through web sites, such as a shop catalalog and calculates how many of words are present (array of words and corresponding points) in current web page and calculates sum of points. If sum of points is creater than minimum value clicks a button or link within the page. Also need to include Instructions run, how to install and setup environment. Code example as an attachment. Non functinal requirements: - Can be run within OSX - Easy to change parameters, extend and attach to other processes - Can be run within Web Browser (Chrome/FF) if needed, so that tester can see what is happening - Perhaps use tool/plugin like Katalon Recorder, that is free and easy to install and use for no technical "testers"