##language-picker Uses style-sheet-factory and popup-directive
###Use in header
<head>
<script src="lg-language-picker/directive.js" ></script>
</head>
in module declaration
var myApp = angular.module('myApp', ['lgLanguagePicker']);
in HTML code
<lg-language-picker choices="fr,en,nl" ng-model="idLangue"></lg-language-picker>