setup upgrade not list the language package extension - Magento 2.0.1

Question

I am trying to create new language store view. after creating language extension, then I have cleared cache

1) When I run setup:upgrade it is not listed my language extension lang_lg_lg

2) In config.php also not contain my lang extension as active (1).

3) when I run this bin/magento info:language:list it will not list my language.

4) php bin/magento setup:static-content:deploy lg_LG not succeed

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Short Description of what I have done

tree folder structure of language extension

composer.json

{
    "name": "lang/lg"
    ,"type": "magento2-language"
    ,"description": "Tamil language"
    ,"authors": [{
    "name": "Bilal Usean",
    "email": "yyyyy@yyy.yyy",
    "role": "Developer"
    }]  
    ,"extra": {"map": [["*", "lang/lg_lg"]]}
}

language.xml

<?xml version='1.0'?>
<language xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xsi:noNamespaceSchemaLocation='urn:magento:framework:App/Language/package.xsd'>
    <code>lg_LG</code>
    <vendor>lang</vendor>
    <package>lg_lg</package>
</language>

registration.php

<?php

\Magento\Framework\Component\ComponentRegistrar::register(
   \Magento\Framework\Component\ComponentRegistrar::LANGUAGE,
   'lang_lg_lg',
   __DIR__
);

lg_LG.csv (copy all values from dictionary.csv then edit the one row of second coloumn) (that row in gedit it seems like)

"We found other products you might like!","நீங்கள் விரும்பக்கூடிய மற்ற பொருட்கள் காணப்படும் !",module,Magento_Catalog

dictionary.csv contains 8000+ rows of phrases for sample I have take one

"We found other products you might like!","We found other products you might like!",module,Magento_Catalog

note: I am using libre office to edit csv

if anyone point out what did I wrong?