This commit also adds the first unit test. The unit test compares the
phonetic map generated by the Python and by the C implementation and
fails if the generated maps are different.
The word list is list of english words that will be used to generate
the phoenitc map.
The word list was taken from https://github.com/dwyl/english-words.git
The license seems to be permissable so keep the file in the local git
repo for two reasons -- backup and convenience.
