Improve japanese

[nabetaro]

Hi,
Thank you for the great lib.

I wish improve lib to Japanese telephone number.
Telephone number in Japan is:

• usually [Area Code] - [Local Exchange Number] - [Subscriber Number].
• [Subscriber Number] is 4 digits.
• Osaka's area code (6) and UPT code (60) are confused.

see also: http://www.soumu.go.jp/main_sosiki/joho_tsusin/eng/TelNumber/Numbering.html

[coveralls]

Coverage increased (+0.04%) to 98.05% when pulling 271f37f on nabetaro:improve_japanese into 46262a5 on floere:master.

[coveralls]

Coverage increased (+0.01%) to 98.02% when pulling 271f37f on nabetaro:improve_japanese into 46262a5 on floere:master.

[floere]

Excellent PR, thank you! I've released 2.14.1 with this code.

Just to confirm: the numbers have dashes - between all parts of the number, like in https://github.com/floere/phony/blob/master/qed/country-specific.md#japan? (see the right hand side)

[nabetaro]

Thank you very much!
I'll use Released gem soon!

It seems the fixed document is OK.

[floere]

Thanks. Enjoy!