Adds .ago() Method to the Time Class

Here is how you use it:

start = Time.now
# something long
puts "It took #{start.ago} to do it"

How to contribute

Read these guidelines. Make sure you build is green before you contribute your pull request. You will need to have Ruby 3.2+ and Bundler installed. Then:

bundle update
bundle exec rake

If it's clean and you don't see any error messages, submit your pull request.