Adds new language words for Lorem Ipsum generator
@param {String} lang Two-letter lang definition
@param {Object} data Words for language. Maight be either a space-separated
list of words (String), Array of words or object with <code>text</code> and
<code>common</code> properties
function(lang, data) {
			if (_.isString(data)) {
				data = {words: _.compact(data.split(' '))};
			} else if (_.isArray(data)) {
				data = {words: data};
			}

			langs[lang] = data;
		}