What's the least painful option to use the Stackexchange Bounty script described here?
I'm dreaming of a chrome extension :)
The "least painful" option would be to sign-up for an Ethereum Studio account and follow the (very comprehensive) "How to run the application in Ethereum Studio" section of the README file in the GitHub repository.
Transposing the instructions to a different IDE would be possible, but unless you know what you're doing this would involve some degree of pain, and therefore wouldn't be "least painful".
Creating a Chrome plug-in is another project in itself.