add node modules to repo

app/node_modules/pretty-bytes/pretty-bytes.js

@@ -0,0 +1,46 @@
+/*!
+	pretty-bytes
+	Convert bytes to a human readable string: 1337 → 1.34 kB
+	https://github.com/sindresorhus/pretty-bytes
+	by Sindre Sorhus
+	MIT License
+*/
+(function () {
+	'use strict';
+
+	// Number.isNaN() polyfill
+	var isNaN = function (val) {
+		return val !== val;
+	};
+
+	var prettyBytes = function (num) {
+		if (typeof num !== 'number' || isNaN(num)) {
+			throw new TypeError('Expected a number');
+		}
+
+		var exponent;
+		var unit;
+		var neg = num < 0;
+		var units = ['B', 'kB', 'MB', 'GB', 'TB', 'PB', 'EB', 'ZB', 'YB'];
+
+		if (neg) {
+			num = -num;
+		}
+
+		if (num < 1) {
+			return (neg ? '-' : '') + num + ' B';
+		}
+
+		exponent = Math.min(Math.floor(Math.log(num) / Math.log(1000)), units.length - 1);
+		num = (num / Math.pow(1000, exponent)).toFixed(2) * 1;
+		unit = units[exponent];
+
+		return (neg ? '-' : '') + num + ' ' + unit;
+	};
+
+	if (typeof module !== 'undefined' && module.exports) {
+		module.exports = prettyBytes;
+	} else {
+		self.prettyBytes = prettyBytes;
+	}
+})();