Add self-signed signing to xcframework(s)

Author: freak4pc

README.md

@@ -161,10 +161,15 @@ Each release starting with RxSwift 6 includes `*.xcframework` framework binaries
 
 Simply drag the needed framework binaries to your **Frameworks, Libraries, and Embedded Content** section under your target's **General** tab.
 
-> **Note**: If you're using `RxCocoa`, be sure to also drag **RxCocoaRuntime.xcframework** before importing `RxCocoa`.
-
 <img src="https://raw.githubusercontent.com/ReactiveX/RxSwift/main/assets/xcframeworks.png" alt="XCFrameworks instructions" width="65%">
 
+> [!TIP]
+> You may verify the identity of the binaries by comparing against the following fingerprint in Xcode 15+:
+>
+> `BD 80 2E 79 4C 8A BD DA 4C 3F 5D 92 B3 E4 C4 FB FA E4 73 44 10 B9 AD 73 44 2E F1 CE B0 27 61 40`
+>
+> <img src="https://raw.githubusercontent.com/ReactiveX/RxSwift/main/assets/xcframeworks_signing.png" alt="XCFrameworks Signature Fingerprint in Xcode 15+" width="65%">
+
 ### [Carthage](https://github.com/Carthage/Carthage)
 
 Add this to `Cartfile`

assets/xcframeworks_signing.png

@@ -70,7 +70,8 @@ for product in ${products[@]}; do
         -output "./${PROJECT_NAME}.xcframework" | xcbeautify
     fi
 
-    # Zip it!
+    # Code sign the binary
+    codesign -v --sign "RxSwift Distribution" "./${PROJECT_NAME}.xcframework"
 done
 
 # Zip all frameworks to a single ZIP