diff --git a/.eslintrc b/.eslintrc
index 1cee748..4d2d750 100644
--- a/.eslintrc
+++ b/.eslintrc
@@ -17,8 +17,8 @@
 	},
 	"rules": {
 		"indent" : [2, "tab", { "SwitchCase": 1 }],
-		"react/jsx-indent": [2, 'tab'],
-		"react/jsx-indent-props": [2, 'tab'],
+		"react/jsx-indent": [2, "tab"],
+		"react/jsx-indent-props": [2, "tab"],
 		"no-tabs": 0
 	}
 }
diff --git a/dist/containers/CenterContainer.js b/dist/containers/CenterContainer.js
new file mode 100644
index 0000000..e7b0292
--- /dev/null
+++ b/dist/containers/CenterContainer.js
@@ -0,0 +1,63 @@
+'use strict';
+
+Object.defineProperty(exports, "__esModule", {
+	value: true
+});
+
+var _extends2 = require('babel-runtime/helpers/extends');
+
+var _extends3 = _interopRequireDefault(_extends2);
+
+var _objectWithoutProperties2 = require('babel-runtime/helpers/objectWithoutProperties');
+
+var _objectWithoutProperties3 = _interopRequireDefault(_objectWithoutProperties2);
+
+var _react = require('react');
+
+var _react2 = _interopRequireDefault(_react);
+
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
+
+var alignItems = function alignItems(direction, horizontal, vertical) {
+	return direction === 'row' && vertical || direction === 'column' && horizontal;
+};
+var justifyContent = function justifyContent(direction, horizontal, vertical) {
+	return direction === 'row' && horizontal || direction === 'column' && vertical;
+};
+
+var CenterContainer = function CenterContainer(props) {
+	var style = props.style,
+	    direction = props.direction,
+	    horizontal = props.horizontal,
+	    vertical = props.vertical,
+	    children = props.children,
+	    other = (0, _objectWithoutProperties3.default)(props, ['style', 'direction', 'horizontal', 'vertical', 'children']);
+
+	var containerStyle = (0, _extends3.default)({
+		display: 'flex',
+		flexDirection: props.direction,
+		alignItems: alignItems(direction, horizontal, vertical) ? 'center' : 'stretch',
+		justifyContent: justifyContent(direction, horizontal, vertical) ? 'center' : 'stretch'
+	}, style);
+
+	return _react2.default.createElement(
+		'div',
+		(0, _extends3.default)({ style: containerStyle }, other),
+		children
+	);
+};
+CenterContainer.propTypes = {
+	children: _react2.default.PropTypes.node,
+	style: _react2.default.PropTypes.object,
+	direction: _react2.default.PropTypes.string,
+	vertical: _react2.default.PropTypes.bool,
+	horizontal: _react2.default.PropTypes.bool
+};
+CenterContainer.defaultProps = {
+	style: {},
+	direction: 'row',
+	vertical: true,
+	horizontal: true
+};
+
+exports.default = CenterContainer;
\ No newline at end of file
diff --git a/dist/index.js b/dist/index.js
new file mode 100644
index 0000000..596a421
--- /dev/null
+++ b/dist/index.js
@@ -0,0 +1,19 @@
+'use strict';
+
+Object.defineProperty(exports, "__esModule", {
+	value: true
+});
+exports.Stopwatch = exports.CenterContainer = undefined;
+
+var _CenterContainer = require('./containers/CenterContainer');
+
+var _CenterContainer2 = _interopRequireDefault(_CenterContainer);
+
+var _Stopwatch = require('./timers/Stopwatch');
+
+var _Stopwatch2 = _interopRequireDefault(_Stopwatch);
+
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
+
+exports.CenterContainer = _CenterContainer2.default;
+exports.Stopwatch = _Stopwatch2.default;
\ No newline at end of file
diff --git a/dist/timers/Stopwatch.js b/dist/timers/Stopwatch.js
new file mode 100644
index 0000000..5a7d4f3
--- /dev/null
+++ b/dist/timers/Stopwatch.js
@@ -0,0 +1,118 @@
+'use strict';
+
+Object.defineProperty(exports, "__esModule", {
+	value: true
+});
+exports.Stopwatch = undefined;
+
+var _getPrototypeOf = require('babel-runtime/core-js/object/get-prototype-of');
+
+var _getPrototypeOf2 = _interopRequireDefault(_getPrototypeOf);
+
+var _classCallCheck2 = require('babel-runtime/helpers/classCallCheck');
+
+var _classCallCheck3 = _interopRequireDefault(_classCallCheck2);
+
+var _createClass2 = require('babel-runtime/helpers/createClass');
+
+var _createClass3 = _interopRequireDefault(_createClass2);
+
+var _possibleConstructorReturn2 = require('babel-runtime/helpers/possibleConstructorReturn');
+
+var _possibleConstructorReturn3 = _interopRequireDefault(_possibleConstructorReturn2);
+
+var _inherits2 = require('babel-runtime/helpers/inherits');
+
+var _inherits3 = _interopRequireDefault(_inherits2);
+
+var _react = require('react');
+
+var _react2 = _interopRequireDefault(_react);
+
+var _sprintf = require('sprintf-js/src/sprintf');
+
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
+
+var Stopwatch = exports.Stopwatch = function (_React$Component) {
+	(0, _inherits3.default)(Stopwatch, _React$Component);
+
+	function Stopwatch() {
+		var _ref;
+
+		var _temp, _this, _ret;
+
+		(0, _classCallCheck3.default)(this, Stopwatch);
+
+		for (var _len = arguments.length, args = Array(_len), _key = 0; _key < _len; _key++) {
+			args[_key] = arguments[_key];
+		}
+
+		return _ret = (_temp = (_this = (0, _possibleConstructorReturn3.default)(this, (_ref = Stopwatch.__proto__ || (0, _getPrototypeOf2.default)(Stopwatch)).call.apply(_ref, [this].concat(args))), _this), _this.state = {
+			elapsed: 0,
+			startTime: new Date(),
+			timer: null
+		}, _this.calculateElapsedSeconds = function (startTime) {
+			var now = new Date();
+			var timeDiff = now.getTime() - startTime.getTime();
+
+			return Math.abs(timeDiff / 1000);
+		}, _this.getTimeDiffString = function () {
+			var seconds = Math.floor(_this.state.elapsed % 60);
+			var minutes = Math.floor(_this.state.elapsed / 60) % 60;
+			var hours = Math.floor(_this.state.elapsed / 3600);
+
+			var timeString = '';
+
+			if (hours > 0) {
+				timeString += (0, _sprintf.sprintf)('%02d', hours) + ':';
+			}
+
+			timeString += (0, _sprintf.sprintf)('%02d', minutes) + ':' + (0, _sprintf.sprintf)('%02d', seconds);
+
+			return timeString;
+		}, _temp), (0, _possibleConstructorReturn3.default)(_this, _ret);
+	}
+
+	(0, _createClass3.default)(Stopwatch, [{
+		key: 'componentWillMount',
+		value: function componentWillMount() {
+			var _this2 = this;
+
+			var startTime = this.props.start || new Date();
+			this.setState({
+				elapsed: this.calculateElapsedSeconds(startTime),
+				startTime: startTime,
+				timer: setInterval(function () {
+					_this2.setState({
+						elapsed: _this2.calculateElapsedSeconds(_this2.state.startTime)
+					});
+				}, 500)
+			});
+		}
+	}, {
+		key: 'componentWillUnmount',
+		value: function componentWillUnmount() {
+			clearInterval(this.state.timer);
+		}
+	}, {
+		key: 'render',
+		value: function render() {
+			return _react2.default.createElement(
+				'span',
+				{ style: this.props.style, className: this.props.className },
+				this.getTimeDiffString()
+			);
+		}
+	}]);
+	return Stopwatch;
+}(_react2.default.Component);
+
+Stopwatch.propTypes = {
+	style: _react2.default.PropTypes.object,
+	className: _react2.default.PropTypes.string,
+	start: _react2.default.PropTypes.instanceOf(Date)
+};
+Stopwatch.defaultProps = {
+	style: {}
+};
+exports.default = Stopwatch;
\ No newline at end of file
diff --git a/package.json b/package.json
index 705ff3f..ded057b 100644
--- a/package.json
+++ b/package.json
@@ -34,7 +34,7 @@
     "babel-preset-react-hmre": "~1.1.1",
     "babel-preset-stage-0": "~6.16.0",
     "debug": "~3.1.0",
-    "eslint": "~3.9.1",
+    "eslint": "~4.18.2",
     "eslint-config-airbnb": "~12.0.0",
     "eslint-plugin-import": "~1.16.0",
     "eslint-plugin-jsx-a11y": "~2.2.2",