Make handler.characters do as vnu code expects.

Fixes https://github.com/validator/validator/issues/2
Remove no-longer-needed SpellingErrorCorrector.

Change
https://github.com/cvrebert/lmvtfy/commit/92ea3e4bc1a122413a39e3fec365307712c8a978
makes SpellingErrorCorrector unnecessary.
Merge pull request #51 from sideshowbarker/master

Fix misspellings problem.