[Feature request] Conversion to ローマ字.

[IgorSzymanski]

It would be really great if you could add the kana-to-romaji conversion functionality.
I can actually write it and pull request it, if you want.

[koozaki]

@IgorSzymanski Thank you for your propose and sorry for the late reply.
That's so good idea, I also wanted to do it. But there are some problems to do that.

Romaji => Kana converting has one answer. but
Kana => Romaji converting has not one answer.

example

こんにちは => Konnnichiha
こんにちは => Konnnitiha

すし => Sushi
すし => Susi

てんぷら => Tennpura
てんぷら => Tenpura
てんぷら => Tempura

etc...

If you have ideas for good solution, please PR or Comments.

Thanks,