docs: bedazzle readme (#12)

Author: ungoldman

.npmignore

@@ -0,0 +1 @@
+stopwatch.png

README.md

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+<div align="center">
+
+<img src="./stopwatch.png" alt="stopwatch" width="200">
+
 # format-duration
 
 Convert a number in milliseconds to a standard duration string.
@@ -12,6 +16,8 @@ Convert a number in milliseconds to a standard duration string.
 [build-url]: https://github.com/ungoldman/format-duration/actions/workflows/tests.yml
 [downloads-image]: https://img.shields.io/npm/dm/format-duration.svg
 
+</div>
+
 ## Install
 
 ```
@@ -75,3 +81,5 @@ Contributions welcome! Please read the [contributing guidelines](CONTRIBUTING.md
 ## License
 
 [ISC](LICENSE.md)
+
+Stopwatch image is from [emojidex](https://emojidex.com/emoji/stopwatch).