Update README.md

Author: Josh Wolff

README.md

@@ -1,6 +1,6 @@
 # SPONTIT :vibration_mode:
 
-Check out our complete API documentation at <a href="https://api.spontit.com">api.spontit.com</a>.
+Check out our complete API documentation at <a href="https://api.spontit.com">api.spontit.com</a>. Our API repository is available <a href="https://github.com/spontit/spontit-api">here</a>.
 
 ## Send push notifications without your own app. :punch:
 Using the Spontit API and Spontit app/webapp, you can send your own push notifications programmatically to Android, iOS, and Desktop devices. You can send your own in less than 5 minutes. :sunglasses: :trophy: (Without touching Swift, Objective-C, Java, XCode, Android Studio, the App Store approval process... :dizzy_face:).