Update README.md

Author: Josh Wolff

README.md

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 # SPONTIT :vibration_mode:
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+Check out our complete API documentation at <a href="https://api.spontit.com>api.spontit.com</a>.
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 ## 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:).