I created this kata because I wanted to practice using hashes. It is a variant of the classic backpack problem and lends itself to a dynamic programming solution.
add rspec to Gemfile and specific ruby version in rvmrc
Merge remote-tracking branch 'upstream/master'
Added Cash Register Kata
This is a short kata which introduces the user to the knapsack problem.
Added requirements for Change class.
Hey Andrew, looks like you forgot to update master before you created this pull request. Can you do that and resubmit? The .rvmrc file is old and the Gemfile has been updated too
Sorry about that. I'll update and resubmit.