feat: update readme

README.md

@@ -17,7 +17,7 @@
 * [x] Create a controller that gets users.
 * [x] Create a controller that gets exchange rates (seeded with dummy data for now).
 * [x] Create a controller that gets and creates exchanges.
-* [ ] Set up a testing strategy.
+* [x] Set up a testing strategy.
 * [x] Test the business logic behind the currency exchanges.
 
 ### Roadmap 2:
@@ -27,13 +27,13 @@
 * [x] Save that information to a database.
 * [x] Create an endpoint to get currency rates from the database and fetch that record if it's less than 30 minutes old.
 * [x] If the currency record is 30 minutes old or older, update it with a new rate record instead.
-* [ ] Develop unit tests for these services.
+* [x] Develop unit tests for these services.
 
 ### Roadmap 3:
 
 * [ ] Implement an identity setup to allow existing users to sign in.
 * [x] Allow the user to perform currency exchanges using the currency API and record them to the database.
-* [ ] Develop unit tests for these services.
+* [x] Develop unit tests for these services.
 
 
 ### Roadmap 4: