Add test harness.
Remove final.
Write and pass tests for IndexOfFtw.
Write and pass more cases for IndexOfFtw. Write and pass same tests for RegexFtwTest.
Refactor IndexOfFtw to be a little saner.
Write and pass tests for character sets.
Refactor IndexOfFtw to use char arrays.
Add presentation.
Update readme.
More progress on presentation.
Even more progress. Remove final from args.
Add remaining teaching things to presentation.
Remove another final.
Add challenge slide.
Merge branch 'develop'