added project: Stopwatch App

Projects/Stopwatch-App.md

@@ -0,0 +1,25 @@
+# Stopwatch App
+
+**Tier:** 1-Beginner
+
+A stopwatch helps you track the time you spent on activities.
+
+## User Stories
+
+-   [ ] User can `start` a clock
+-   [ ] User can `stop` the clock
+-   [ ] When the clock is `stopped` the user can click `start` again and the clock will continue counting up
+-   [ ] User can `restart` the clock
+
+## Bonus features
+
+-   [ ] User can create `laps` - these will be displayed on the screen
+-   [ ] User can clear all the laps
+
+## Useful links and resources
+
+-   [setInterval](https://www.w3schools.com/jsref/met_win_setinterval.asp)
+
+## Example projects
+
+-   [StopWatch by Billy Brown](https://codepen.io/_Billy_Brown/pen/dbJeh)

README.md

@@ -55,6 +55,7 @@ required to complete them.
 | [Quiz App](./Projects/Quiz-App.md)                                     | Test your knowledge by answering questions                | 1-Beginner |
 | [Roman to Decimal Converter](./Projects/Roman-to-Decimal-Converter.md) | Convert Roman to Decimal numbers                          | 1-Beginner |
 | [Slider Design](./Projects/Slider-Design.md)                           | Display images using a slider control                     | 1-Beginner |
+| [Stopwatch App](./Projects/Stopwatch-App.md)                           | Count time spent on activities                            | 1-Beginner |
 | [TrueOrFalse](./Projects/True-or-False-App.md)                         | Identify the result of a conditional comparison           | 1-Beginner |
 | [Wind Chill](./Projects/Windchill-App.md)                              | Calculate the windchill factor from an actual temperature | 1-Beginner |