World languages in YAML (thanks to http://snipplr.com/view.php?codeview&id=46886)

languages.yml

AA: 'Afar'
AB: 'Abkhaz'
AE: 'Avestan'
AF: 'Afrikaans'
AK: 'Akan'
AM: 'Amharic'
AN: 'Aragonese'
AR: 'Arabic'
AS: 'Assamese'
AV: 'Avaric'
AY: 'Aymara'
AZ: 'Azerbaijani'
BA: 'Bashkir'
BE: 'Belarusian'
BG: 'Bulgarian'
BH: 'Bihari'
BI: 'Bislama'
BM: 'Bambara'
BN: 'Bengali'
BO: 'Tibetan Standard, Tibetan, Central'
BR: 'Breton'
BS: 'Bosnian'
CA: 'Catalan; Valencian'
CE: 'Chechen'
CH: 'Chamorro'
CO: 'Corsican'
CR: 'Cree'
CS: 'Czech'
CU: 'Old Church Slavonic, Church Slavic, Church Slavonic, Old Bulgarian, Old Slavonic'
CV: 'Chuvash'
CY: 'Welsh'
DA: 'Danish'
DE: 'German'
DV: 'Divehi; Dhivehi; Maldivian;'
DZ: 'Dzongkha'
EE: 'Ewe'
EL: 'Greek, Modern'
EN: 'English'
EO: 'Esperanto'
ES: 'Spanish; Castilian'
ET: 'Estonian'
EU: 'Basque'
FA: 'Persian'
FF: 'Fula; Fulah; Pulaar; Pular'
FI: 'Finnish'
FJ: 'Fijian'
FO: 'Faroese'
FR: 'French'
FY: 'Western Frisian'
GA: 'Irish'
GD: 'Scottish Gaelic; Gaelic'
GL: 'Galician'
GN: 'Guaraní'
GU: 'Gujarati'
GV: 'Manx'
HA: 'Hausa'
HE: 'Hebrew (modern)'
HI: 'Hindi'
HO: 'Hiri Motu'
HR: 'Croatian'
HT: 'Haitian; Haitian Creole'
HU: 'Hungarian'
HY: 'Armenian'
HZ: 'Herero'
IA: 'Interlingua'
ID: 'Indonesian'
IE: 'Interlingue'
IG: 'Igbo'
II: 'Nuosu'
IK: 'Inupiaq'
IO: 'Ido'
IS: 'Icelandic'
IT: 'Italian'
IU: 'Inuktitut'
JA: 'Japanese (ja)'
JV: 'Javanese (jv)'
KA: 'Georgian'
KG: 'Kongo'
KI: 'Kikuyu, Gikuyu'
KJ: 'Kwanyama, Kuanyama'
KK: 'Kazakh'
KL: 'Kalaallisut, Greenlandic'
KM: 'Khmer'
KN: 'Kannada'
KO: 'Korean'
KR: 'Kanuri'
KS: 'Kashmiri'
KU: 'Kurdish'
KV: 'Komi'
KW: 'Cornish'
KY: 'Kirghiz, Kyrgyz'
LA: 'Latin'
LB: 'Luxembourgish, Letzeburgesch'
LG: 'Luganda'
LI: 'Limburgish, Limburgan, Limburger'
LN: 'Lingala'
LO: 'Lao'
LT: 'Lithuanian'
LU: 'Luba-Katanga'
LV: 'Latvian'
MG: 'Malagasy'
MH: 'Marshallese'
MI: 'Maori'
MK: 'Macedonian'
ML: 'Malayalam'
MN: 'Mongolian'
MR: 'Marathi (Mara?hi)'
MS: 'Malay'
MT: 'Maltese'
MY: 'Burmese'
NA: 'Nauru'
NB: 'Norwegian Bokmål'
ND: 'North Ndebele'
NE: 'Nepali'
NG: 'Ndonga'
NL: 'Dutch'
NN: 'Norwegian Nynorsk'
NO: 'Norwegian'
NR: 'South Ndebele'
NV: 'Navajo, Navaho'
NY: 'Chichewa; Chewa; Nyanja'
OC: 'Occitan'
OJ: 'Ojibwe, Ojibwa'
OM: 'Oromo'
OR: 'Oriya'
OS: 'Ossetian, Ossetic'
PA: 'Panjabi, Punjabi'
PI: 'Pali'
PL: 'Polish'
PS: 'Pashto, Pushto'
PT: 'Portuguese'
QU: 'Quechua'
RM: 'Romansh'
RN: 'Kirundi'
RO: 'Romanian, Moldavian, Moldovan'
RU: 'Russian'
RW: 'Kinyarwanda'
SA: 'Sanskrit (Sa?sk?ta)'
SC: 'Sardinian'
SD: 'Sindhi'
SE: 'Northern Sami'
SG: 'Sango'
SI: 'Sinhala, Sinhalese'
SK: 'Slovak'
SL: 'Slovene'
SM: 'Samoan'
SN: 'Shona'
SO: 'Somali'
SQ: 'Albanian'
SR: 'Serbian'
SS: 'Swati'
ST: 'Southern Sotho'
SU: 'Sundanese'
SV: 'Swedish'
SW: 'Swahili'
TA: 'Tamil'
TE: 'Telugu'
TG: 'Tajik'
TH: 'Thai'
TI: 'Tigrinya'
TK: 'Turkmen'
TL: 'Tagalog'
TN: 'Tswana'
TO: 'Tonga (Tonga Islands)'
TR: 'Turkish'
TS: 'Tsonga'
TT: 'Tatar'
TW: 'Twi'
TY: 'Tahitian'
UG: 'Uighur, Uyghur'
UK: 'Ukrainian'
UR: 'Urdu'
UZ: 'Uzbek'
VE: 'Venda'
VI: 'Vietnamese'
VO: 'Volapük'
WA: 'Walloon'
WO: 'Wolof'
XH: 'Xhosa'
YI: 'Yiddish'
YO: 'Yoruba'
ZA: 'Zhuang, Chuang'
ZH: 'Chinese'
ZU: 'Zulu'