chore: Add FitBit API

README.md

@@ -90,5 +90,4 @@ A collective list of JSON APIs for use in web development.
 | API | Description | OAuth |Link |
 |---|---|---|---|
 | Football-Data.org | Football Data | No | [Go!](https://api.football-data.org/) |
-
-
+| FitBit | FitBit API | No | [Go!](https://dev.fitbit.com) |