bitset-records.gemspec, add_development_dependency rspec and pry
written by Ryan Bigg
spec/bitset-records_spec, test with it creates, equal and non-equal
written by Ryan Bigg
spec/bitset-records_spec, test that #add and #remove should fail when passed a string
lib/bitset-records, raise error when passed a string
written by Ryan Bigg
Merge branch 'contributed_by_ryanbigg'