readme: bdk pre-post 1.0 notes

Author: reez

README.md

@@ -8,13 +8,13 @@ An example iOS app using [Bitcoin Dev Kit](https://github.com/bitcoindevkit) 1.0
 
 ## Build
 
-### 1.0
+### BDK 1.0
 
 The `main` branch of BDK Swift Example Wallet uses a local package of bdk-swift, built using a [build script in bdk-ffi](https://github.com/bitcoindevkit/bdk-ffi/blob/master/bdk-swift/build-xcframework.sh).
 
 *This is temporary as we gear up for the 1.0 beta of bdk-swift, which is currently in [alpha](https://github.com/bitcoindevkit/bdk-swift/releases), and allows for those migrating to 1.0 to keep up with the latest and greatest.*
 
-### Pre 1.0
+### BDK Pre 1.0
 
 The `pre-v1` branch of BDK Swift Example Wallet uses a remote package of bdk-swift.