Enhancement - script.sh not modified for windows(bash) users

Issue summary: I tried running script.sh and encountered these errors. I have already corrected them in my repo, but I want everyone to easily solve get past this hurdle.

**current behaviour**

1- uses python3 which is appropriate for linux


2- source venv/bin/activate is not correct for windows users


3- wget is not installed in git bash by default for windows users


4- for deactivating virtual environment: source deactivate is not correct

**proposed behaviour**
1- include changes in readme
or
2- include commented script.sh code in the file and inform regarding it in readme
3- instead of using wget we can use **CURL** for better execution of script.sh
4- for deactivating remove source from the line