More fixes

This fixes comments made on pull request #16 after I already deleted branch.

https://github.com/adobe-webplatform/balance-text/commit/8a9bc27fd43b8ab2d1c16d01c779c68a420ed7be#commitcomment-2626417

- Use regex to detect whitespace (not sure how I didn't see that one)

- Remove unnecessary else. I chose not to use "even better" suggestion because ti seemed a bit cryptic with such as large function.

- Remove reflow function. Guess I don't need that :)