Move stemmers and wordbreakers to app/
Get rid of one-time variables.
Rename prepare_words to prepare_stems to make more sense.
Add specs for DefaultStemmer.
Disable warnings during Rspec, confuses the output with irrelevant messages.
Add tests for DefaultWordBreaker
Allow splitting words by < and >
Remove excess new lines.
Add tests for Thing model.
Fill missing specs for ThingsHelper.