Update README.md

Author: joshspicer

README.md

@@ -2,3 +2,19 @@
 Learn a new language with a new (Italian) word-a-day!
 
 Used in conjunction with [this simple Azure functions api](https://github.com/joshspicer/italian_api).
+
+
+# Usage
+
+Create a new file at `DailyItalianWord/Secrets.swift` with your API key from above.
+
+```swift
+//  secrets.swift
+
+import Foundation
+
+
+struct Secrets {
+    static let URI = "YOUR_AZURE_API"
+}
+```