[Docs] added star history to the readme (alexjustesen#934)

Author: alexjustesen

README.md

@@ -16,6 +16,8 @@ As far as I can tell https://github.com/henrywhitaker3/Speedtest-Tracker was aba
 
 Speedtest Tracker is containerized so you can run it anywhere you run your Docker containers. The [install](https://docs.speedtest-tracker.dev/getting-started/installation) documentation will get you up and running with using Docker or Docker Composer along with choosing a database (MySQL/MariaDB or Postgresql).
 
+[![Star History Chart](https://api.star-history.com/svg?repos=alexjustesen/speedtest-tracker&type=Date)](https://star-history.com/#alexjustesen/speedtest-tracker&Date)
+
 ### FAQs and Features
 
 [FAQs](https://docs.speedtest-tracker.dev/faqs) and a full list of planned and completed [features](https://docs.speedtest-tracker.dev/getting-started/features) can be found in the [documentation](https://docs.speedtest-tracker.dev).