Added an automated test

Very first version. Something with less bash/perl magic would be preferable in the long run.
Merge pull request #5 from markijbema/add-automated-tests

WIP: Added an automated test
add palindrome example
WIP some updates per Wil Moore's suggestions
change parse_int in palindrome products spec
Merge pull request #6 from fluxusfrequency/palindrome_example

add palindrome example