function sentence(words, end) {
						if (words.length) {
							words[0] = words[0].charAt(0).toUpperCase() + words[0].substring(1);
						}

						return words.join(' ') + (end || choice('?!...')); // more dots than question marks
					}
Generate a paragraph of "Lorem ipsum" text
@param {Number} wordCount Words count in paragraph
@param {Boolean} startWithCommon Should paragraph start with common 
"lorem ipsum" sentence.
@returns {String}