A solution to the first ever Ruby quiz.
The command line utility encrypts and decrypts messages using the Solitaire Cipher
gem install 'ruby_quiz_1'barelyknown$ ruby_quiz_1 encrypt 'Welcome to Ruby quiz'
ABVAW LWZSY OORYK DUPVH
barelyknown$ ruby_quiz_1 decrypt 'ABVAW LWZSY OORYK DUPVH'
WELCO METOR UBYQU IZXXX