README.md in trackler-2.0.8.54 vs README.md in trackler-2.0.8.55

- old
+ new

@@ -91,9 +91,16 @@
 ```
 gem build trackler.gemspec
 gem install --local trackler-$VERSION.gem
 gem push trackler-$VERSION.gem
 ```
+## Users
+
+Projects that make use of this gem:
+
+* https://github.com/exercism/exercism.io
+* https://github.com/exercism/x-api
+* https://github.com/sandimetz/99bottles-polyglot
 
 ## License
 
 The gem is available as open source under the terms of the [MIT License](http://opensource.org/licenses/MIT).