Lack a list of supported languages in the README file

[clemsos]

It will be useful to have such a list at a glance.
Thank you very much for the good job :)

[PlNG]

At quick glance of _languageData.js, the models object contains, according to Object.keys(models).length 62 languages. I dumped it through my language code database. Klingon was probably the biggest out of the blue appearance. Awesome that this supports that. I'll submit a pull request on the ReadMe.md file shortly, and a slight change to models to make it language tag parsable on the portuguese codes.

Afrikaans
Arabic
Azerbaijani
Bulgarian
Catalan, Valencian
Cebuano
Czech
Welsh
Danish
German
English
Spanish, Castilian
Estonian
Basque
Persian
Finnish
French
Hausa
Hawaiian
Hindi
Croatian
Hungarian
Indonesian
Icelandic
Italian
Kazakh
Kirghiz, Kyrgyz
Latin
Lithuanian
Latvian
Macedonian
Mongolian
Norwegian Bokmål
Nepali
Dutch, Flemish
South Ndebele
Pedi, Northern Sotho, Sepedi
Polish
Pushto, Pashto
Portuguese
Portuguese (Brazilian)
Portuguese (Portugal)
Romanian, Moldavian, Moldovan
Russian
Slovak
Slovenian
Somali
Albanian
Serbian
Swati
Southern Sotho
Swedish
Swahili (macrolanguage)
Tagalog
Klingon, tlhIngan-Hol
Tswana
Turkish
Tsonga
Ukrainian
Urdu
Uzbek
Venda
Vietnamese
Xhosa
Zulu

[richtr]

Actually, the library supports many more languages (~100). A full list of languages will be added to the README via pull request #5.

Thanks @ping!